398294697 has 4 divisors (see below), whose sum is σ = 531059600. Its totient is φ = 265529796.

The previous prime is 398294693. The next prime is 398294723. The reversal of 398294697 is 796492893.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 398294697 - 2² = 398294693 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (398294693) 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, 66382447 + ... + 66382452.

It is an arithmetic number, because the mean of its divisors is an integer number (132764900).

Almost surely, 2^398294697 is an apocalyptic number.

It is an amenable number.

398294697 is a deficient number, since it is larger than the sum of its proper divisors (132764903).

398294697 is a wasteful number, since it uses less digits than its factorization.

398294697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132764902.

The product of its digits is 5878656, while the sum is 57.

The square root of 398294697 is about 19957.3218894720. The cubic root of 398294697 is about 735.7577432301.

The spelling of 398294697 in words is "three hundred ninety-eight million, two hundred ninety-four thousand, six hundred ninety-seven".