398966804 has 24 divisors (see below), whose sum is σ = 723076200. Its totient is φ = 192389120.

The previous prime is 398966783. The next prime is 398966831. The reversal of 398966804 is 408669893.

It can be written as a sum of positive squares in 4 ways, for example, as 10876804 + 388090000 = 3298^2 + 19700^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 162224 + ... + 164664.

It is an arithmetic number, because the mean of its divisors is an integer number (30128175).

Almost surely, 2^398966804 is an apocalyptic number.

It is an amenable number.

398966804 is a deficient number, since it is larger than the sum of its proper divisors (324109396).

398966804 is a wasteful number, since it uses less digits than its factorization.

398966804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3883 (or 3881 counting only the distinct ones).

The product of its (nonzero) digits is 2239488, while the sum is 53.

The square root of 398966804 is about 19974.1533988302. The cubic root of 398966804 is about 736.1713649691.

The spelling of 398966804 in words is "three hundred ninety-eight million, nine hundred sixty-six thousand, eight hundred four".