398464894 has 16 divisors (see below), whose sum is σ = 604286640. Its totient is φ = 197043840.

The previous prime is 398464883. The next prime is 398464909. The reversal of 398464894 is 498464893.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 120637 + ... + 123895.

It is an arithmetic number, because the mean of its divisors is an integer number (37767915).

Almost surely, 2^398464894 is an apocalyptic number.

398464894 is a deficient number, since it is larger than the sum of its proper divisors (205821746).

398464894 is a wasteful number, since it uses less digits than its factorization.

398464894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3915.

The product of its digits is 5971968, while the sum is 55.

The square root of 398464894 is about 19961.5854580742. The cubic root of 398464894 is about 735.8625282291.

Subtracting 398464894 from its reverse (498464893), we obtain a palindrome (99999999).

The spelling of 398464894 in words is "three hundred ninety-eight million, four hundred sixty-four thousand, eight hundred ninety-four".