396089966 has 4 divisors (see below), whose sum is σ = 594134952. Its totient is φ = 198044982.

The previous prime is 396089957. The next prime is 396090001. The reversal of 396089966 is 669980693.

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

It is a super-2 number, since 2×396089966² = 313774522331762312, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 99022490 + ... + 99022493.

It is an arithmetic number, because the mean of its divisors is an integer number (148533738).

Almost surely, 2^396089966 is an apocalyptic number.

396089966 is a deficient number, since it is larger than the sum of its proper divisors (198044986).

396089966 is a wasteful number, since it uses less digits than its factorization.

396089966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198044985.

The product of its (nonzero) digits is 3779136, while the sum is 56.

The square root of 396089966 is about 19902.0090945613. The cubic root of 396089966 is about 734.3976529508.

The spelling of 396089966 in words is "three hundred ninety-six million, eighty-nine thousand, nine hundred sixty-six".