399232676 has 24 divisors (see below), whose sum is σ = 736396920. Its totient is φ = 189093632.

The previous prime is 399232661. The next prime is 399232681. The reversal of 399232676 is 676232993.

It can be written as a sum of positive squares in 4 ways, for example, as 180902500 + 218330176 = 13450^2 + 14776^2 .

It is a super-2 number, since 2×399232676² = 318773459172241952, 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 399232676.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26321 + ... + 38616.

It is an arithmetic number, because the mean of its divisors is an integer number (30683205).

Almost surely, 2^399232676 is an apocalyptic number.

It is an amenable number.

399232676 is a deficient number, since it is larger than the sum of its proper divisors (337164244).

399232676 is a wasteful number, since it uses less digits than its factorization.

399232676 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65023 (or 65021 counting only the distinct ones).

The product of its digits is 734832, while the sum is 47.

The square root of 399232676 is about 19980.8076913822. The cubic root of 399232676 is about 736.3348571775.

The spelling of 399232676 in words is "three hundred ninety-nine million, two hundred thirty-two thousand, six hundred seventy-six".