398264 has 8 divisors (see below), whose sum is σ = 746760. Its totient is φ = 199128.

The previous prime is 398261. The next prime is 398267. The reversal of 398264 is 462893.

It is an interprime number because it is at equal distance from previous prime (398261) and next prime (398267).

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×398264² = 317228427392, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 398264.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24884 + ... + 24899.

It is an arithmetic number, because the mean of its divisors is an integer number (93345).

2³⁹⁸²⁶⁴ is an apocalyptic number.

It is an amenable number.

398264 is a deficient number, since it is larger than the sum of its proper divisors (348496).

398264 is a wasteful number, since it uses less digits than its factorization.

398264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49789 (or 49785 counting only the distinct ones).

The product of its digits is 10368, while the sum is 32.

The square root of 398264 is about 631.0816112041. The cubic root of 398264 is about 73.5738840865.

The spelling of 398264 in words is "three hundred ninety-eight thousand, two hundred sixty-four".