398936 has 16 divisors (see below), whose sum is σ = 764640. Its totient is φ = 195040.

The previous prime is 398933. The next prime is 398941. The reversal of 398936 is 639893.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 398936.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398933) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 155 + ... + 906.

It is an arithmetic number, because the mean of its divisors is an integer number (47790).

2³⁹⁸⁹³⁶ is an apocalyptic number.

It is an amenable number.

398936 is a deficient number, since it is larger than the sum of its proper divisors (365704).

398936 is a wasteful number, since it uses less digits than its factorization.

398936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1114 (or 1110 counting only the distinct ones).

The product of its digits is 34992, while the sum is 38.

The square root of 398936 is about 631.6138060556. The cubic root of 398936 is about 73.6152418024.

The spelling of 398936 in words is "three hundred ninety-eight thousand, nine hundred thirty-six".