398625 has 16 divisors (see below), whose sum is σ = 663936. Its totient is φ = 212400.

The previous prime is 398621. The next prime is 398627. The reversal of 398625 is 526893.

It is a happy number.

It is not a de Polignac number, because 398625 - 2² = 398621 is a prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 398625.

It is not an unprimeable number, because it can be changed into a prime (398621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 157 + ... + 906.

It is an arithmetic number, because the mean of its divisors is an integer number (41496).

2³⁹⁸⁶²⁵ is an apocalyptic number.

It is an amenable number.

398625 is a deficient number, since it is larger than the sum of its proper divisors (265311).

398625 is a wasteful number, since it uses less digits than its factorization.

398625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1081 (or 1071 counting only the distinct ones).

The product of its digits is 12960, while the sum is 33.

The square root of 398625 is about 631.3675633100. The cubic root of 398625 is about 73.5961073280.

The spelling of 398625 in words is "three hundred ninety-eight thousand, six hundred twenty-five".