1144440340 has 96 divisors (see below), whose sum is σ = 2704453920. Its totient is φ = 404619264.

The previous prime is 1144440331. The next prime is 1144440343. The reversal of 1144440340 is 430444411.

It is a happy number.

It can be written as a sum of positive squares in 16 ways, for example, as 99082116 + 1045358224 = 9954^2 + 32332^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1144440343) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 363252 + ... + 366388.

It is an arithmetic number, because the mean of its divisors is an integer number (28171395).

Almost surely, 2^1144440340 is an apocalyptic number.

1144440340 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 1144440340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1352226960).

1144440340 is an abundant number, since it is smaller than the sum of its proper divisors (1560013580).

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

1144440340 is a wasteful number, since it uses less digits than its factorization.

1144440340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3229 (or 3227 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 25.

The square root of 1144440340 is about 33829.5778868138. The cubic root of 1144440340 is about 1045.9984779166.

Adding to 1144440340 its reverse (430444411), we get a palindrome (1574884751).

The spelling of 1144440340 in words is "one billion, one hundred forty-four million, four hundred forty thousand, three hundred forty".