399028676 has 12 divisors (see below), whose sum is σ = 700533372. Its totient is φ = 198876288.

The previous prime is 399028657. The next prime is 399028681. The reversal of 399028676 is 676820993.

It can be written as a sum of positive squares in 2 ways, for example, as 150651076 + 248377600 = 12274^2 + 15760^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 158105 + ... + 160608.

It is an arithmetic number, because the mean of its divisors is an integer number (58377781).

Almost surely, 2^399028676 is an apocalyptic number.

It is an amenable number.

399028676 is a deficient number, since it is larger than the sum of its proper divisors (301504696).

399028676 is a wasteful number, since it uses less digits than its factorization.

399028676 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319030 (or 319028 counting only the distinct ones).

The product of its (nonzero) digits is 979776, while the sum is 50.

The square root of 399028676 is about 19975.7021403504. The cubic root of 399028676 is about 736.2094182941.

The spelling of 399028676 in words is "three hundred ninety-nine million, twenty-eight thousand, six hundred seventy-six".