3990474 has 24 divisors (see below), whose sum is σ = 8753472. Its totient is φ = 1313640.

The previous prime is 3990473. The next prime is 3990509. The reversal of 3990474 is 4740993.

It is not an unprimeable number, because it can be changed into a prime (3990473) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 159 + ... + 2829.

It is an arithmetic number, because the mean of its divisors is an integer number (364728).

Almost surely, 2^3990474 is an apocalyptic number.

3990474 is an abundant number, since it is smaller than the sum of its proper divisors (4762998).

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

3990474 is a wasteful number, since it uses less digits than its factorization.

3990474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2762 (or 2759 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

The square root of 3990474 is about 1997.6170804236. The cubic root of 3990474 is about 158.6139918439.

The spelling of 3990474 in words is "three million, nine hundred ninety thousand, four hundred seventy-four".