398043804 has 12 divisors (see below), whose sum is σ = 928768904. Its totient is φ = 132681264.

The previous prime is 398043803. The next prime is 398043823. The reversal of 398043804 is 408340893.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398043803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16585147 + ... + 16585170.

Almost surely, 2^398043804 is an apocalyptic number.

It is an amenable number.

398043804 is an abundant number, since it is smaller than the sum of its proper divisors (530725100).

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

398043804 is a wasteful number, since it uses less digits than its factorization.

398043804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33170324 (or 33170322 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 39.

The square root of 398043804 is about 19951.0351611138. The cubic root of 398043804 is about 735.6032217643.

The spelling of 398043804 in words is "three hundred ninety-eight million, forty-three thousand, eight hundred four".