3990370 has 16 divisors (see below), whose sum is σ = 7319160. Its totient is φ = 1565824.

The previous prime is 3990353. The next prime is 3990373. The reversal of 3990370 is 730993.

It can be written as a sum of positive squares in 4 ways, for example, as 3279721 + 710649 = 1811^2 + 843^2 .

It is not an unprimeable number, because it can be changed into a prime (3990373) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3235 + ... + 4294.

Almost surely, 2^3990370 is an apocalyptic number.

3990370 is a deficient number, since it is larger than the sum of its proper divisors (3328790).

3990370 is a wasteful number, since it uses less digits than its factorization.

3990370 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7589.

The product of its (nonzero) digits is 5103, while the sum is 31.

The square root of 3990370 is about 1997.5910492391. The cubic root of 3990370 is about 158.6126138958.

It can be divided in two parts, 39 and 90370, that added together give a palindrome (90409).

The spelling of 3990370 in words is "three million, nine hundred ninety thousand, three hundred seventy".