1144234440 has 192 divisors, whose sum is σ = 3881779200. Its totient is φ = 291949056.

The previous prime is 1144234423. The next prime is 1144234451. The reversal of 1144234440 is 444324411.

It is a super-2 number, since 2×1144234440² = 2618544907364227200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1325449 + ... + 1326311.

It is an arithmetic number, because the mean of its divisors is an integer number (20217600).

Almost surely, 2^1144234440 is an apocalyptic number.

1144234440 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 1144234440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1940889600).

1144234440 is an abundant number, since it is smaller than the sum of its proper divisors (2737544760).

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

1144234440 is a wasteful number, since it uses less digits than its factorization.

1144234440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1036 (or 1029 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

The square root of 1144234440 is about 33826.5345549910. The cubic root of 1144234440 is about 1045.9357444866.

Adding to 1144234440 its reverse (444324411), we get a palindrome (1588558851).

The spelling of 1144234440 in words is "one billion, one hundred forty-four million, two hundred thirty-four thousand, four hundred forty".