3990312 has 48 divisors (see below), whose sum is σ = 10906740. Its totient is φ = 1317888.

The previous prime is 3990307. The next prime is 3990331. The reversal of 3990312 is 2130993.

3990312 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 3896676 + 93636 = 1974^2 + 306^2 .

It is an Ulam number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11128 + ... + 11480.

Almost surely, 2^3990312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3990312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5453370).

3990312 is an abundant number, since it is smaller than the sum of its proper divisors (6916428).

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

3990312 is a wasteful number, since it uses less digits than its factorization.

3990312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 522 (or 515 counting only the distinct ones).

The product of its (nonzero) digits is 1458, while the sum is 27.

The square root of 3990312 is about 1997.5765317004. The cubic root of 3990312 is about 158.6118454144.

The spelling of 3990312 in words is "three million, nine hundred ninety thousand, three hundred twelve".