398910 has 16 divisors (see below), whose sum is σ = 957456. Its totient is φ = 106368.

The previous prime is 398903. The next prime is 398917. The reversal of 398910 is 19893.

It is a happy number.

398910 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (398903) and next prime (398917).

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 13297 = 398910 / (3 + 9 + 8 + 9 + 1 + 0).

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398917) 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, 6619 + ... + 6678.

It is an arithmetic number, because the mean of its divisors is an integer number (59841).

2³⁹⁸⁹¹⁰ is an apocalyptic number.

398910 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

398910 is an abundant number, since it is smaller than the sum of its proper divisors (558546).

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

398910 is a wasteful number, since it uses less digits than its factorization.

398910 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13307.

The product of its (nonzero) digits is 1944, while the sum is 30.

The square root of 398910 is about 631.5932235229. The cubic root of 398910 is about 73.6136425167.

The spelling of 398910 in words is "three hundred ninety-eight thousand, nine hundred ten".