396339631 has 8 divisors (see below), whose sum is σ = 403728624. Its totient is φ = 388979520.

The previous prime is 396339623. The next prime is 396339637. The reversal of 396339631 is 136933693.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 396339631 - 2³ = 396339623 is a prime.

It is a super-2 number, since 2×396339631² = 314170206202432322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (396339637) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21531 + ... + 35443.

It is an arithmetic number, because the mean of its divisors is an integer number (50466078).

Almost surely, 2^396339631 is an apocalyptic number.

396339631 is a deficient number, since it is larger than the sum of its proper divisors (7388993).

396339631 is a wasteful number, since it uses less digits than its factorization.

396339631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14441.

The product of its digits is 236196, while the sum is 43.

The square root of 396339631 is about 19908.2804631641. The cubic root of 396339631 is about 734.5519233568.

The spelling of 396339631 in words is "three hundred ninety-six million, three hundred thirty-nine thousand, six hundred thirty-one".