39807938 has 16 divisors (see below), whose sum is σ = 61718976. Its totient is φ = 19244400.

The previous prime is 39807913. The next prime is 39807961. The reversal of 39807938 is 83970893.

It is a junction number, because it is equal to n+sod(n) for n = 39807892 and 39807901.

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, 6395 + ... + 10977.

It is an arithmetic number, because the mean of its divisors is an integer number (3857436).

Almost surely, 2^39807938 is an apocalyptic number.

39807938 is a deficient number, since it is larger than the sum of its proper divisors (21911038).

39807938 is a wasteful number, since it uses less digits than its factorization.

39807938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4729.

The product of its (nonzero) digits is 326592, while the sum is 47.

The square root of 39807938 is about 6309.3532156632. The cubic root of 39807938 is about 341.4469419172.

The spelling of 39807938 in words is "thirty-nine million, eight hundred seven thousand, nine hundred thirty-eight".