398436275 has 6 divisors (see below), whose sum is σ = 494061012. Its totient is φ = 318749000.

The previous prime is 398436253. The next prime is 398436317. The reversal of 398436275 is 572634893.

It is a happy number.

It is not a de Polignac number, because 398436275 - 2²⁴ = 381659059 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7968701 + ... + 7968750.

It is an arithmetic number, because the mean of its divisors is an integer number (82343502).

Almost surely, 2^398436275 is an apocalyptic number.

398436275 is a deficient number, since it is larger than the sum of its proper divisors (95624737).

398436275 is a wasteful number, since it uses less digits than its factorization.

398436275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15937461 (or 15937456 counting only the distinct ones).

The product of its digits is 1088640, while the sum is 47.

The square root of 398436275 is about 19960.8685933253. The cubic root of 398436275 is about 735.8449104881.

The spelling of 398436275 in words is "three hundred ninety-eight million, four hundred thirty-six thousand, two hundred seventy-five".