39994294788 has 36 divisors (see below), whose sum is σ = 115539074560. Its totient is φ = 11426941296.

The previous prime is 39994294787. The next prime is 39994294799. The reversal of 39994294788 is 88749249993.

39994294788 is a `hidden beast` number, since 39 + 99 + 429 + 4 + 7 + 88 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (39994294787) 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, 79353508 + ... + 79354011.

Almost surely, 2^39994294788 is an apocalyptic number.

It is an amenable number.

39994294788 is an abundant number, since it is smaller than the sum of its proper divisors (75544779772).

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

39994294788 is a wasteful number, since it uses less digits than its factorization.

39994294788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158707536 (or 158707531 counting only the distinct ones).

The product of its digits is 282175488, while the sum is 72.

The spelling of 39994294788 in words is "thirty-nine billion, nine hundred ninety-four million, two hundred ninety-four thousand, seven hundred eighty-eight".