396782331 has 16 divisors (see below), whose sum is σ = 580137600. Its totient is φ = 239224320.

The previous prime is 396782317. The next prime is 396782357. The reversal of 396782331 is 133287693.

It is a happy number.

It is not a de Polignac number, because 396782331 - 2¹⁴ = 396765947 is a prime.

It is a super-2 number, since 2×396782331² = 314872436387587122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (396782731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24781 + ... + 37518.

It is an arithmetic number, because the mean of its divisors is an integer number (36258600).

Almost surely, 2^396782331 is an apocalyptic number.

396782331 is a deficient number, since it is larger than the sum of its proper divisors (183355269).

396782331 is a wasteful number, since it uses less digits than its factorization.

396782331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62506.

The product of its digits is 163296, while the sum is 42.

The square root of 396782331 is about 19919.3958492721. The cubic root of 396782331 is about 734.8253127360.

The spelling of 396782331 in words is "three hundred ninety-six million, seven hundred eighty-two thousand, three hundred thirty-one".