944039113920 has 672 divisors, whose sum is σ = 3759023638656. Its totient is φ = 213000192000.

The previous prime is 944039113891. The next prime is 944039113921. The reversal of 944039113920 is 29311930449.

944039113920 is a `hidden beast` number, since 9 + 4 + 403 + 91 + 139 + 20 = 666.

It is a tau number, because it is divible by the number of its divisors (672).

It is a super-2 number, since 2×944039113920² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (944039113921) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1101562132 + ... + 1101562988.

Almost surely, 2^944039113920 is an apocalyptic number.

944039113920 is a gapful number since it is divisible by the number (90) 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 944039113920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1879511819328).

944039113920 is an abundant number, since it is smaller than the sum of its proper divisors (2814984524736).

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

944039113920 is a wasteful number, since it uses less digits than its factorization.

944039113920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1529 (or 1516 counting only the distinct ones).

The product of its (nonzero) digits is 209952, while the sum is 45.

The spelling of 944039113920 in words is "nine hundred forty-four billion, thirty-nine million, one hundred thirteen thousand, nine hundred twenty".