398442 has 16 divisors (see below), whose sum is σ = 869472. Its totient is φ = 120720.

The previous prime is 398441. The next prime is 398459. The reversal of 398442 is 244893.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (398441) 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, 2953 + ... + 3084.

It is an arithmetic number, because the mean of its divisors is an integer number (54342).

2³⁹⁸⁴⁴² is an apocalyptic number.

398442 is an abundant number, since it is smaller than the sum of its proper divisors (471030).

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

398442 is a wasteful number, since it uses less digits than its factorization.

398442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6053.

The product of its digits is 6912, while the sum is 30.

The square root of 398442 is about 631.2226231687. Note that the first 3 decimals coincide. The cubic root of 398442 is about 73.5848434842.

The spelling of 398442 in words is "three hundred ninety-eight thousand, four hundred forty-two".