398297271 has 16 divisors (see below), whose sum is σ = 540419040. Its totient is φ = 260881920.

The previous prime is 398297257. The next prime is 398297287. The reversal of 398297271 is 172792893.

It is not a de Polignac number, because 398297271 - 2⁵ = 398297239 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 398297271.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398297071) 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, 55531 + ... + 62291.

It is an arithmetic number, because the mean of its divisors is an integer number (33776190).

Almost surely, 2^398297271 is an apocalyptic number.

398297271 is a deficient number, since it is larger than the sum of its proper divisors (142121769).

398297271 is a wasteful number, since it uses less digits than its factorization.

398297271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7106.

The product of its digits is 381024, while the sum is 48.

The square root of 398297271 is about 19957.3863769783. The cubic root of 398297271 is about 735.7593281842.

The spelling of 398297271 in words is "three hundred ninety-eight million, two hundred ninety-seven thousand, two hundred seventy-one".