398406004 has 12 divisors (see below), whose sum is σ = 697882500. Its totient is φ = 199011008.

The previous prime is 398405993. The next prime is 398406013. The reversal of 398406004 is 400604893.

It can be written as a sum of positive squares in 2 ways, for example, as 217503504 + 180902500 = 14748^2 + 13450^2 .

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, 43279 + ... + 51670.

It is an arithmetic number, because the mean of its divisors is an integer number (58156875).

Almost surely, 2^398406004 is an apocalyptic number.

It is an amenable number.

398406004 is a deficient number, since it is larger than the sum of its proper divisors (299476496).

398406004 is a wasteful number, since it uses less digits than its factorization.

398406004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96002 (or 96000 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 398406004 is about 19960.1103203364. The cubic root of 398406004 is about 735.8262748644.

The spelling of 398406004 in words is "three hundred ninety-eight million, four hundred six thousand, four".