3990810 has 32 divisors (see below), whose sum is σ = 9657792. Its totient is φ = 1055360.

The previous prime is 3990773. The next prime is 3990827. The reversal of 3990810 is 180993.

It is a happy number.

It is a super-2 number, since 2×3990810² = 31853128912200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 3625 + ... + 4595.

It is an arithmetic number, because the mean of its divisors is an integer number (301806).

Almost surely, 2^3990810 is an apocalyptic number.

3990810 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

3990810 is an abundant number, since it is smaller than the sum of its proper divisors (5666982).

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

3990810 is a wasteful number, since it uses less digits than its factorization.

3990810 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1118.

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

The square root of 3990810 is about 1997.7011788553. The cubic root of 3990810 is about 158.6184435127.

The spelling of 3990810 in words is "three million, nine hundred ninety thousand, eight hundred ten".