398622 has 16 divisors (see below), whose sum is σ = 911232. Its totient is φ = 113880.

The previous prime is 398621. The next prime is 398627. The reversal of 398622 is 226893.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 398622.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398621) 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, 4704 + ... + 4787.

It is an arithmetic number, because the mean of its divisors is an integer number (56952).

2³⁹⁸⁶²² is an apocalyptic number.

398622 is an abundant number, since it is smaller than the sum of its proper divisors (512610).

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

398622 is a wasteful number, since it uses less digits than its factorization.

398622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9503.

The product of its digits is 5184, while the sum is 30.

The square root of 398622 is about 631.3651875104. The cubic root of 398622 is about 73.5959227026.

The spelling of 398622 in words is "three hundred ninety-eight thousand, six hundred twenty-two".