398964 has 12 divisors (see below), whose sum is σ = 930944. Its totient is φ = 132984.

The previous prime is 398941. The next prime is 398969. The reversal of 398964 is 469893.

398964 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398969) by changing a digit.

398964 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16612 + ... + 16635.

2³⁹⁸⁹⁶⁴ is an apocalyptic number.

It is an amenable number.

398964 is an abundant number, since it is smaller than the sum of its proper divisors (531980).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

398964 is a wasteful number, since it uses less digits than its factorization.

398964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33254 (or 33252 counting only the distinct ones).

The product of its digits is 46656, while the sum is 39.

The square root of 398964 is about 631.6359711099. The cubic root of 398964 is about 73.6169640323.

The spelling of 398964 in words is "three hundred ninety-eight thousand, nine hundred sixty-four".