398884868 has 12 divisors (see below), whose sum is σ = 700295232. Its totient is φ = 198800520.

The previous prime is 398884861. The next prime is 398884891. The reversal of 398884868 is 868488893.

It is a self number, because there is not a number n which added to its sum of digits gives 398884868.

It is not an unprimeable number, because it can be changed into a prime (398884861) 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, 159080 + ... + 161567.

It is an arithmetic number, because the mean of its divisors is an integer number (58357936).

Almost surely, 2^398884868 is an apocalyptic number.

It is an amenable number.

398884868 is a deficient number, since it is larger than the sum of its proper divisors (301410364).

398884868 is a wasteful number, since it uses less digits than its factorization.

398884868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320962 (or 320960 counting only the distinct ones).

The product of its digits is 21233664, while the sum is 62.

The square root of 398884868 is about 19972.1022428787. The cubic root of 398884868 is about 736.1209655657.

The spelling of 398884868 in words is "three hundred ninety-eight million, eight hundred eighty-four thousand, eight hundred sixty-eight".