3990070 has 48 divisors (see below), whose sum is σ = 8864640. Its totient is φ = 1284864.

The previous prime is 3990061. The next prime is 3990073. The reversal of 3990070 is 700993.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3990073) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8091 + ... + 8569.

It is an arithmetic number, because the mean of its divisors is an integer number (184680).

Almost surely, 2^3990070 is an apocalyptic number.

3990070 is an abundant number, since it is smaller than the sum of its proper divisors (4874570).

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

3990070 is a wasteful number, since it uses less digits than its factorization.

3990070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 517 (or 510 counting only the distinct ones).

The product of its (nonzero) digits is 1701, while the sum is 28.

The square root of 3990070 is about 1997.5159573831. The cubic root of 3990070 is about 158.6086389113.

It can be divided in two parts, 39 and 90070, that added together give a palindrome (90109).

The spelling of 3990070 in words is "three million, nine hundred ninety thousand, seventy".