398960 has 20 divisors (see below), whose sum is σ = 927768. Its totient is φ = 159552.

The previous prime is 398941. The next prime is 398969. The reversal of 398960 is 69893.

It is a tau number, because it is divible by the number of its divisors (20).

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 398960.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398969) 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, 2414 + ... + 2573.

2³⁹⁸⁹⁶⁰ is an apocalyptic number.

It is an amenable number.

398960 is an abundant number, since it is smaller than the sum of its proper divisors (528808).

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

398960 is a wasteful number, since it uses less digits than its factorization.

398960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5000 (or 4994 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 35.

The square root of 398960 is about 631.6328047212. The cubic root of 398960 is about 73.6167180044.

The spelling of 398960 in words is "three hundred ninety-eight thousand, nine hundred sixty".