398841804 has 36 divisors (see below), whose sum is σ = 1052019696. Its totient is φ = 127166688.

The previous prime is 398841803. The next prime is 398841823. The reversal of 398841804 is 408148893.

398841804 is a `hidden beast` number, since 398 + 84 + 180 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a self number, because there is not a number n which added to its sum of digits gives 398841804.

It is not an unprimeable number, because it can be changed into a prime (398841803) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 240019 + ... + 241674.

Almost surely, 2^398841804 is an apocalyptic number.

It is an amenable number.

398841804 is an abundant number, since it is smaller than the sum of its proper divisors (653177892).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

398841804 is a wasteful number, since it uses less digits than its factorization.

398841804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 481726 (or 481721 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 45.

The square root of 398841804 is about 19971.0241099449. The cubic root of 398841804 is about 736.0944738329.

The spelling of 398841804 in words is "three hundred ninety-eight million, eight hundred forty-one thousand, eight hundred four".