398867235 has 32 divisors (see below), whose sum is σ = 709459968. Its totient is φ = 190028160.

The previous prime is 398867221. The next prime is 398867237. The reversal of 398867235 is 532768893.

It is not a de Polignac number, because 398867235 - 2²² = 394672931 is a prime.

It is not an unprimeable number, because it can be changed into a prime (398867237) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26947 + ... + 39036.

It is an arithmetic number, because the mean of its divisors is an integer number (22170624).

Almost surely, 2^398867235 is an apocalyptic number.

398867235 is a deficient number, since it is larger than the sum of its proper divisors (310592733).

398867235 is a wasteful number, since it uses less digits than its factorization.

398867235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66035.

The product of its digits is 2177280, while the sum is 51.

The square root of 398867235 is about 19971.6607972397. The cubic root of 398867235 is about 736.1101184824.

The spelling of 398867235 in words is "three hundred ninety-eight million, eight hundred sixty-seven thousand, two hundred thirty-five".