396687933 has 6 divisors (see below), whose sum is σ = 572993694. Its totient is φ = 264458616.

The previous prime is 396687899. The next prime is 396687937. The reversal of 396687933 is 339786693.

It can be written as a sum of positive squares in only one way, i.e., 395731449 + 956484 = 19893^2 + 978^2 .

It is not a de Polignac number, because 396687933 - 2⁶ = 396687869 is a prime.

It is a super-2 number, since 2×396687933² = 314722632375624978, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 396687933.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (396687937) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 22038210 + ... + 22038227.

It is an arithmetic number, because the mean of its divisors is an integer number (95498949).

Almost surely, 2^396687933 is an apocalyptic number.

It is an amenable number.

396687933 is a deficient number, since it is larger than the sum of its proper divisors (176305761).

396687933 is a wasteful number, since it uses less digits than its factorization.

396687933 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44076443 (or 44076440 counting only the distinct ones).

The product of its digits is 4408992, while the sum is 54.

The square root of 396687933 is about 19917.0262087491. The cubic root of 396687933 is about 734.7670343164.

The spelling of 396687933 in words is "three hundred ninety-six million, six hundred eighty-seven thousand, nine hundred thirty-three".