39931228812 has 24 divisors (see below), whose sum is σ = 93179732800. Its totient is φ = 13309428816.

The previous prime is 39931228807. The next prime is 39931228829. The reversal of 39931228812 is 21882213993.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57639 + ... + 288417.

Almost surely, 2^39931228812 is an apocalyptic number.

It is an amenable number.

39931228812 is an abundant number, since it is smaller than the sum of its proper divisors (53248503988).

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

39931228812 is a wasteful number, since it uses less digits than its factorization.

39931228812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245205 (or 245203 counting only the distinct ones).

The product of its digits is 373248, while the sum is 48.

The spelling of 39931228812 in words is "thirty-nine billion, nine hundred thirty-one million, two hundred twenty-eight thousand, eight hundred twelve".