398836628 has 12 divisors (see below), whose sum is σ = 698241600. Its totient is φ = 199339032.

The previous prime is 398836589. The next prime is 398836649. The reversal of 398836628 is 826638893.

It is a happy number.

It is a hoax number, since the sum of its digits (53) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 398836628.

It is a congruent number.

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, 7676 + ... + 29267.

It is an arithmetic number, because the mean of its divisors is an integer number (58186800).

Almost surely, 2^398836628 is an apocalyptic number.

It is an amenable number.

398836628 is a deficient number, since it is larger than the sum of its proper divisors (299404972).

398836628 is a wasteful number, since it uses less digits than its factorization.

398836628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39646 (or 39644 counting only the distinct ones).

The product of its digits is 2985984, while the sum is 53.

The square root of 398836628 is about 19970.8945217784. The cubic root of 398836628 is about 736.0912895783.

The spelling of 398836628 in words is "three hundred ninety-eight million, eight hundred thirty-six thousand, six hundred twenty-eight".