3990512406 has 16 divisors (see below), whose sum is σ = 7990094448. Its totient is φ = 1328659200.

The previous prime is 3990512399. The next prime is 3990512453. The reversal of 3990512406 is 6042150993.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 372175 + ... + 382746.

It is an arithmetic number, because the mean of its divisors is an integer number (499380903).

Almost surely, 2^3990512406 is an apocalyptic number.

3990512406 is an abundant number, since it is smaller than the sum of its proper divisors (3999582042).

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

3990512406 is a wasteful number, since it uses less digits than its factorization.

3990512406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 755807.

The product of its (nonzero) digits is 58320, while the sum is 39.

The square root of 3990512406 is about 63170.5026574904. The cubic root of 3990512406 is about 1586.1450069824.

The spelling of 3990512406 in words is "three billion, nine hundred ninety million, five hundred twelve thousand, four hundred six".