39222031920 has 40 divisors (see below), whose sum is σ = 121588299696. Its totient is φ = 10459208448.

The previous prime is 39222031909. The next prime is 39222031921. The reversal of 39222031920 is 2913022293.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (39222031921) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81712327 + ... + 81712806.

Almost surely, 2^39222031920 is an apocalyptic number.

39222031920 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

39222031920 is an abundant number, since it is smaller than the sum of its proper divisors (82366267776).

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

39222031920 is a wasteful number, since it uses less digits than its factorization.

39222031920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163425149 (or 163425143 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 33.

The spelling of 39222031920 in words is "thirty-nine billion, two hundred twenty-two million, thirty-one thousand, nine hundred twenty".