398892 has 24 divisors (see below), whose sum is σ = 1002736. Its totient is φ = 122688.

The previous prime is 398887. The next prime is 398903. The reversal of 398892 is 298893.

398892 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×398892² = 318229655328, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 398892.

It is an unprimeable number.

398892 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 7 ways as a sum of consecutive naturals, for example, 1123 + ... + 1434.

2³⁹⁸⁸⁹² is an apocalyptic number.

It is an amenable number.

398892 is an abundant number, since it is smaller than the sum of its proper divisors (603844).

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

398892 is a wasteful number, since it uses less digits than its factorization.

398892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2577 (or 2575 counting only the distinct ones).

The product of its digits is 31104, while the sum is 39.

The square root of 398892 is about 631.5789736842. The cubic root of 398892 is about 73.6125352783.

Subtracting from 398892 its reverse (298893), we obtain a palindrome (99999).

The spelling of 398892 in words is "three hundred ninety-eight thousand, eight hundred ninety-two".