398854925 has 48 divisors (see below), whose sum is σ = 586248192. Its totient is φ = 263524800.

The previous prime is 398854921. The next prime is 398854933. The reversal of 398854925 is 529458893.

It is not a de Polignac number, because 398854925 - 2² = 398854921 is a prime.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398854921) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 583634 + ... + 584316.

It is an arithmetic number, because the mean of its divisors is an integer number (12213504).

Almost surely, 2^398854925 is an apocalyptic number.

398854925 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

398854925 is a deficient number, since it is larger than the sum of its proper divisors (187393267).

398854925 is a wasteful number, since it uses less digits than its factorization.

398854925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 818 (or 813 counting only the distinct ones).

The product of its digits is 3110400, while the sum is 53.

The square root of 398854925 is about 19971.3526081735. The cubic root of 398854925 is about 736.1025456963.

The spelling of 398854925 in words is "three hundred ninety-eight million, eight hundred fifty-four thousand, nine hundred twenty-five".