396383831 has 4 divisors (see below), whose sum is σ = 396964872. Its totient is φ = 395802792.

The previous prime is 396383797. The next prime is 396383857. The reversal of 396383831 is 138383693.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-396383831 is a prime.

It is a super-2 number, since 2×396383831² = 314240282956473122, 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 (396383431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 289496 + ... + 290861.

It is an arithmetic number, because the mean of its divisors is an integer number (99241218).

Almost surely, 2^396383831 is an apocalyptic number.

396383831 is a deficient number, since it is larger than the sum of its proper divisors (581041).

396383831 is an equidigital number, since it uses as much as digits as its factorization.

396383831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 581040.

The product of its digits is 279936, while the sum is 44.

The square root of 396383831 is about 19909.3905230672. The cubic root of 396383831 is about 734.5792282115.

The spelling of 396383831 in words is "three hundred ninety-six million, three hundred eighty-three thousand, eight hundred thirty-one".