398464893 has 8 divisors (see below), whose sum is σ = 590318400. Its totient is φ = 265643244.

The previous prime is 398464883. The next prime is 398464909.

It is a happy number.

398464893 is a `hidden beast` number, since 3 + 98 + 464 + 8 + 93 = 666.

398464893 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 398464893 - 2²⁰ = 397416317 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398464813) 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, 7378953 + ... + 7379006.

It is an arithmetic number, because the mean of its divisors is an integer number (73789800).

Almost surely, 2^398464893 is an apocalyptic number.

It is an amenable number.

398464893 is a deficient number, since it is larger than the sum of its proper divisors (191853507).

398464893 is a wasteful number, since it uses less digits than its factorization.

398464893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14757968 (or 14757962 counting only the distinct ones).

The product of its digits is 4478976, while the sum is 54.

The square root of 398464893 is about 19961.5854330261. The cubic root of 398464893 is about 735.8625276135.

The spelling of 398464893 in words is "three hundred ninety-eight million, four hundred sixty-four thousand, eight hundred ninety-three".