3988912 has 30 divisors (see below), whose sum is σ = 7974564. Its totient is φ = 1932480.

The previous prime is 3988909. The next prime is 3988961. The reversal of 3988912 is 2198893.

It is a super-2 number, since 2×3988912² = 31822837887488, which contains 22 as substring.

It is an Ulam number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 59503 + ... + 59569.

Almost surely, 2^3988912 is an apocalyptic number.

It is an amenable number.

3988912 is a deficient number, since it is larger than the sum of its proper divisors (3985652).

3988912 is an equidigital number, since it uses as much as digits as its factorization.

3988912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197 (or 130 counting only the distinct ones).

The product of its digits is 31104, while the sum is 40.

The square root of 3988912 is about 1997.2260763369. The cubic root of 3988912 is about 158.5932936020.

It can be divided in two parts, 398891 and 2, that added together give a palindrome (398893).

The spelling of 3988912 in words is "three million, nine hundred eighty-eight thousand, nine hundred twelve".