398337816 has 32 divisors (see below), whose sum is σ = 997095600. Its totient is φ = 132612480.

The previous prime is 398337811. The next prime is 398337871. The reversal of 398337816 is 618733893.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398337811) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9886 + ... + 29906.

Almost surely, 2^398337816 is an apocalyptic number.

It is an amenable number.

398337816 is an abundant number, since it is smaller than the sum of its proper divisors (598757784).

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

398337816 is a wasteful number, since it uses less digits than its factorization.

398337816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20859 (or 20855 counting only the distinct ones).

The product of its digits is 653184, while the sum is 48.

The square root of 398337816 is about 19958.4021404520. The cubic root of 398337816 is about 735.7842930801.

The spelling of 398337816 in words is "three hundred ninety-eight million, three hundred thirty-seven thousand, eight hundred sixteen".