398224897 has 16 divisors (see below), whose sum is σ = 478540800. Its totient is φ = 324152640.

The previous prime is 398224891. The next prime is 398224913. The reversal of 398224897 is 798422893.

It is not a de Polignac number, because 398224897 - 2³ = 398224889 is a prime.

It is a Duffinian number.

Its product of digits (1741824) is a multiple of the sum of its prime divisors (32256).

It is not an unprimeable number, because it can be changed into a prime (398224891) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3697 + ... + 28462.

It is an arithmetic number, because the mean of its divisors is an integer number (29908800).

Almost surely, 2^398224897 is an apocalyptic number.

It is an amenable number.

398224897 is a deficient number, since it is larger than the sum of its proper divisors (80315903).

398224897 is a wasteful number, since it uses less digits than its factorization.

398224897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32256.

The product of its digits is 1741824, while the sum is 52.

The square root of 398224897 is about 19955.5730812222. The cubic root of 398224897 is about 735.7147609098.

The spelling of 398224897 in words is "three hundred ninety-eight million, two hundred twenty-four thousand, eight hundred ninety-seven".