398877225 has 12 divisors (see below), whose sum is σ = 659477136. Its totient is φ = 212734480.

The previous prime is 398877211. The next prime is 398877251. The reversal of 398877225 is 522778893.

It is not a de Polignac number, because 398877225 - 2⁴ = 398877209 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2659107 + ... + 2659256.

It is an arithmetic number, because the mean of its divisors is an integer number (54956428).

Almost surely, 2^398877225 is an apocalyptic number.

It is an amenable number.

398877225 is a deficient number, since it is larger than the sum of its proper divisors (260599911).

398877225 is a wasteful number, since it uses less digits than its factorization.

398877225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5318376 (or 5318371 counting only the distinct ones).

The product of its digits is 1693440, while the sum is 51.

The square root of 398877225 is about 19971.9109000616. The cubic root of 398877225 is about 736.1162639514.

The spelling of 398877225 in words is "three hundred ninety-eight million, eight hundred seventy-seven thousand, two hundred twenty-five".