39992794272 has 72 divisors (see below), whose sum is σ = 115875392724. Its totient is φ = 13079399424.

The previous prime is 39992794211. The next prime is 39992794273. The reversal of 39992794272 is 27249729993.

39992794272 is a `hidden beast` number, since 3 + 9 + 99 + 279 + 4 + 272 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 37201151376 + 2791642896 = 192876^2 + 52836^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is not an unprimeable number, because it can be changed into a prime (39992794273) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1294773 + ... + 1325300.

Almost surely, 2^39992794272 is an apocalyptic number.

39992794272 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

39992794272 is an abundant number, since it is smaller than the sum of its proper divisors (75882598452).

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

39992794272 is a wasteful number, since it uses less digits than its factorization.

39992794272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2620142 (or 2620131 counting only the distinct ones).

The product of its digits is 30862944, while the sum is 63.

The spelling of 39992794272 in words is "thirty-nine billion, nine hundred ninety-two million, seven hundred ninety-four thousand, two hundred seventy-two".