3990371 has 16 divisors (see below), whose sum is σ = 5149440. Its totient is φ = 3000480.

The previous prime is 3990353. The next prime is 3990373. The reversal of 3990371 is 1730993.

3990371 = T₅₈ + T₅₉ + ... + T₂₈₈.

It is a happy number.

It is not a de Polignac number, because 3990371 - 2⁶ = 3990307 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3990373) 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 15 ways as a sum of consecutive naturals, for example, 1340 + ... + 3126.

It is an arithmetic number, because the mean of its divisors is an integer number (321840).

Almost surely, 2^3990371 is an apocalyptic number.

3990371 is a deficient number, since it is larger than the sum of its proper divisors (1159069).

3990371 is a wasteful number, since it uses less digits than its factorization.

3990371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1834.

The product of its (nonzero) digits is 5103, while the sum is 32.

The square root of 3990371 is about 1997.5912995405. The cubic root of 3990371 is about 158.6126271454.

The spelling of 3990371 in words is "three million, nine hundred ninety thousand, three hundred seventy-one".