398922 has 16 divisors (see below), whose sum is σ = 844992. Its totient is φ = 125120.

The previous prime is 398921. The next prime is 398933. The reversal of 398922 is 229893.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 398922.

It is not an unprimeable number, because it can be changed into a prime (398921) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1854 + ... + 2057.

It is an arithmetic number, because the mean of its divisors is an integer number (52812).

2³⁹⁸⁹²² is an apocalyptic number.

398922 is an abundant number, since it is smaller than the sum of its proper divisors (446070).

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

398922 is a wasteful number, since it uses less digits than its factorization.

398922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3933.

The product of its digits is 7776, while the sum is 33.

The square root of 398922 is about 631.6027232367. The cubic root of 398922 is about 73.6143806572.

The spelling of 398922 in words is "three hundred ninety-eight thousand, nine hundred twenty-two".