3990658 has 24 divisors (see below), whose sum is σ = 7132752. Its totient is φ = 1668744.

The previous prime is 3990641. The next prime is 3990689. The reversal of 3990658 is 8560993.

It is a self number, because there is not a number n which added to its sum of digits gives 3990658.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3741 + ... + 4687.

It is an arithmetic number, because the mean of its divisors is an integer number (297198).

Almost surely, 2^3990658 is an apocalyptic number.

3990658 is a deficient number, since it is larger than the sum of its proper divisors (3142094).

3990658 is a wasteful number, since it uses less digits than its factorization.

3990658 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1006 (or 999 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 40.

The square root of 3990658 is about 1997.6631347652. The cubic root of 3990658 is about 158.6164296935.

The spelling of 3990658 in words is "three million, nine hundred ninety thousand, six hundred fifty-eight".