398693875 has 8 divisors (see below), whose sum is σ = 497570112. Its totient is φ = 318955000.

The previous prime is 398693873. The next prime is 398693899. The reversal of 398693875 is 578396893.

It is not a de Polignac number, because 398693875 - 2¹ = 398693873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (398693873) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1594651 + ... + 1594900.

It is an arithmetic number, because the mean of its divisors is an integer number (62196264).

Almost surely, 2^398693875 is an apocalyptic number.

398693875 is a deficient number, since it is larger than the sum of its proper divisors (98876237).

398693875 is an equidigital number, since it uses as much as digits as its factorization.

398693875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3189566 (or 3189556 counting only the distinct ones).

The product of its digits is 9797760, while the sum is 58.

The square root of 398693875 is about 19967.3201757271. The cubic root of 398693875 is about 736.0034576427.

The spelling of 398693875 in words is "three hundred ninety-eight million, six hundred ninety-three thousand, eight hundred seventy-five".