398270873 has 48 divisors (see below), whose sum is σ = 550198656. Its totient is φ = 283368960.

The previous prime is 398270867. The next prime is 398270881. The reversal of 398270873 is 378072893.

It is a happy number.

It is not a de Polignac number, because 398270873 - 2²⁶ = 331162009 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (398270863) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 791540 + ... + 792042.

It is an arithmetic number, because the mean of its divisors is an integer number (11462472).

Almost surely, 2^398270873 is an apocalyptic number.

It is an amenable number.

398270873 is a deficient number, since it is larger than the sum of its proper divisors (151927783).

398270873 is a wasteful number, since it uses less digits than its factorization.

398270873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 654 (or 647 counting only the distinct ones).

The product of its (nonzero) digits is 508032, while the sum is 47.

The square root of 398270873 is about 19956.7250068742. The cubic root of 398270873 is about 735.7430731528.

The spelling of 398270873 in words is "three hundred ninety-eight million, two hundred seventy thousand, eight hundred seventy-three".