396935638 has 16 divisors (see below), whose sum is σ = 649840320. Its totient is φ = 180339400.

The previous prime is 396935629. The next prime is 396935647. The reversal of 396935638 is 836539693.

It is an interprime number because it is at equal distance from previous prime (396935629) and next prime (396935647).

It is a congruent number.

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, 78033 + ... + 82963.

It is an arithmetic number, because the mean of its divisors is an integer number (40615020).

Almost surely, 2^396935638 is an apocalyptic number.

396935638 is a deficient number, since it is larger than the sum of its proper divisors (252904682).

396935638 is a wasteful number, since it uses less digits than its factorization.

396935638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8603.

The product of its digits is 3149280, while the sum is 52.

The square root of 396935638 is about 19923.2436616129. The cubic root of 396935638 is about 734.9199400666.

The spelling of 396935638 in words is "three hundred ninety-six million, nine hundred thirty-five thousand, six hundred thirty-eight".