398120804 has 12 divisors (see below), whose sum is σ = 698581884. Its totient is φ = 198525984.

The previous prime is 398120803. The next prime is 398120839. The reversal of 398120804 is 408021893.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 245548900 + 152571904 = 15670^2 + 12352^2 .

It is not an unprimeable number, because it can be changed into a prime (398120803) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 131927 + ... + 134910.

It is an arithmetic number, because the mean of its divisors is an integer number (58215157).

Almost surely, 2^398120804 is an apocalyptic number.

It is an amenable number.

398120804 is a deficient number, since it is larger than the sum of its proper divisors (300461080).

398120804 is a wasteful number, since it uses less digits than its factorization.

398120804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267214 (or 267212 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 398120804 is about 19952.9647922308. The cubic root of 398120804 is about 735.6506518842.

The spelling of 398120804 in words is "three hundred ninety-eight million, one hundred twenty thousand, eight hundred four".