39402957 has 16 divisors (see below), whose sum is σ = 60685632. Its totient is φ = 22475520.

The previous prime is 39402949. The next prime is 39402971. The reversal of 39402957 is 75920493.

It is not a de Polignac number, because 39402957 - 2³ = 39402949 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39402557) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34558 + ... + 35679.

It is an arithmetic number, because the mean of its divisors is an integer number (3792852).

Almost surely, 2^39402957 is an apocalyptic number.

It is an amenable number.

39402957 is a deficient number, since it is larger than the sum of its proper divisors (21282675).

39402957 is a wasteful number, since it uses less digits than its factorization.

39402957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70268.

The product of its (nonzero) digits is 68040, while the sum is 39.

The square root of 39402957 is about 6277.1774708064. The cubic root of 39402957 is about 340.2851039990.

The spelling of 39402957 in words is "thirty-nine million, four hundred two thousand, nine hundred fifty-seven".