1144462440 has 128 divisors (see below), whose sum is σ = 3965915520. Its totient is φ = 261120000.

The previous prime is 1144462439. The next prime is 1144462441. The reversal of 1144462440 is 442644411.

1144462440 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (1144462439) and next prime (1144462441).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 1144462398 and 1144462407.

It is not an unprimeable number, because it can be changed into a prime (1144462441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3061 + ... + 47940.

It is an arithmetic number, because the mean of its divisors is an integer number (30983715).

Almost surely, 2^1144462440 is an apocalyptic number.

1144462440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1144462440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1982957760).

1144462440 is an abundant number, since it is smaller than the sum of its proper divisors (2821453080).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1144462440 is a wasteful number, since it uses less digits than its factorization.

1144462440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51043 (or 51039 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 30.

The square root of 1144462440 is about 33829.9045224783. The cubic root of 1144462440 is about 1046.0052108779.

It can be divided in two parts, 114446 and 2440, that added together give a triangular number (116886 = T₄₈₃).

The spelling of 1144462440 in words is "one billion, one hundred forty-four million, four hundred sixty-two thousand, four hundred forty".