39402920 has 32 divisors (see below), whose sum is σ = 90547200. Its totient is φ = 15425088.

The previous prime is 39402899. The next prime is 39402929. The reversal of 39402920 is 2920493.

39402920 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (39402929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8600 + ... + 12359.

It is an arithmetic number, because the mean of its divisors is an integer number (2829600).

Almost surely, 2^39402920 is an apocalyptic number.

It is an amenable number.

39402920 is an abundant number, since it is smaller than the sum of its proper divisors (51144280).

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

39402920 is a wasteful number, since it uses less digits than its factorization.

39402920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21017 (or 21013 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 39402920 is about 6277.1745236213. The cubic root of 39402920 is about 340.2849974879.

The spelling of 39402920 in words is "thirty-nine million, four hundred two thousand, nine hundred twenty".