3990064 has 20 divisors (see below), whose sum is σ = 8325856. Its totient is φ = 1841472.

The previous prime is 3990061. The next prime is 3990073. The reversal of 3990064 is 4600993.

It is a super-2 number, since 2×3990064² = 31841221448192, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3990061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9384 + ... + 9799.

Almost surely, 2^3990064 is an apocalyptic number.

It is an amenable number.

3990064 is an abundant number, since it is smaller than the sum of its proper divisors (4335792).

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

3990064 is a wasteful number, since it uses less digits than its factorization.

3990064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19204 (or 19198 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 31.

The square root of 3990064 is about 1997.5144555172. The cubic root of 3990064 is about 158.6085594096.

The spelling of 3990064 in words is "three million, nine hundred ninety thousand, sixty-four".