398886 has 16 divisors (see below), whose sum is σ = 840000. Its totient is φ = 125928.

The previous prime is 398863. The next prime is 398887. The reversal of 398886 is 688893.

398886 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 2×398886² = 318220081992, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398887) by changing a digit.

398886 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, 1636 + ... + 1863.

It is an arithmetic number, because the mean of its divisors is an integer number (52500).

2³⁹⁸⁸⁸⁶ is an apocalyptic number.

398886 is an abundant number, since it is smaller than the sum of its proper divisors (441114).

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

398886 is a wasteful number, since it uses less digits than its factorization.

398886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3523.

The product of its digits is 82944, while the sum is 42.

The square root of 398886 is about 631.5742236665. The cubic root of 398886 is about 73.6121661914.

It can be divided in two parts, 3 and 98886, that added together give a palindrome (98889).

The spelling of 398886 in words is "three hundred ninety-eight thousand, eight hundred eighty-six".