3990693 has 16 divisors (see below), whose sum is σ = 6110720. Its totient is φ = 2269296.

The previous prime is 3990689. The next prime is 3990731. The reversal of 3990693 is 3960993.

It is not a de Polignac number, because 3990693 - 2² = 3990689 is a prime.

3990693 is a modest number, since divided by 693 gives 399 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3990593) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6138 + ... + 6756.

It is an arithmetic number, because the mean of its divisors is an integer number (381920).

Almost surely, 2^3990693 is an apocalyptic number.

It is an amenable number.

3990693 is a deficient number, since it is larger than the sum of its proper divisors (2120027).

3990693 is a wasteful number, since it uses less digits than its factorization.

3990693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 936.

The product of its (nonzero) digits is 39366, while the sum is 39.

The square root of 3990693 is about 1997.6718949818. The cubic root of 3990693 is about 158.6168934064.

The spelling of 3990693 in words is "three million, nine hundred ninety thousand, six hundred ninety-three".