398464892 has 12 divisors (see below), whose sum is σ = 796929840. Its totient is φ = 170770656.

The previous prime is 398464883. The next prime is 398464909. The reversal of 398464892 is 298464893.

398464892 is an admirable number.

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, 7115417 + ... + 7115472.

It is an arithmetic number, because the mean of its divisors is an integer number (66410820).

Almost surely, 2^398464892 is an apocalyptic number.

It is an amenable number.

398464892 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.

398464892 is a wasteful number, since it uses less digits than its factorization.

398464892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14230900 (or 14230898 counting only the distinct ones).

The product of its digits is 2985984, while the sum is 53.

The square root of 398464892 is about 19961.5854079780. The cubic root of 398464892 is about 735.8625269979.

Subtracting from 398464892 its reverse (298464893), we obtain a palindrome (99999999).

The spelling of 398464892 in words is "three hundred ninety-eight million, four hundred sixty-four thousand, eight hundred ninety-two".