398836844 has 12 divisors (see below), whose sum is σ = 797673744. Its totient is φ = 170930064.

The previous prime is 398836843. The next prime is 398836903. The reversal of 398836844 is 448638893.

398836844 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (398836843) 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, 7122059 + ... + 7122114.

It is an arithmetic number, because the mean of its divisors is an integer number (66472812).

Almost surely, 2^398836844 is an apocalyptic number.

It is an amenable number.

398836844 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

398836844 is a wasteful number, since it uses less digits than its factorization.

398836844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14244184 (or 14244182 counting only the distinct ones).

The product of its digits is 3981312, while the sum is 53.

The square root of 398836844 is about 19970.8999296476. The cubic root of 398836844 is about 736.0914224612.

The spelling of 398836844 in words is "three hundred ninety-eight million, eight hundred thirty-six thousand, eight hundred forty-four".