3998910 has 32 divisors (see below), whose sum is σ = 10163232. Its totient is φ = 1003520.

The previous prime is 3998899. The next prime is 3998959. The reversal of 3998910 is 198993.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3411 + ... + 4430.

It is an arithmetic number, because the mean of its divisors is an integer number (317601).

Almost surely, 2^3998910 is an apocalyptic number.

3998910 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

3998910 is an abundant number, since it is smaller than the sum of its proper divisors (6164322).

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

3998910 is a wasteful number, since it uses less digits than its factorization.

3998910 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7868.

The product of its (nonzero) digits is 17496, while the sum is 39.

The square root of 3998910 is about 1999.7274814334. The cubic root of 3998910 is about 158.7256849940.

The spelling of 3998910 in words is "three million, nine hundred ninety-eight thousand, nine hundred ten".