3990650 has 12 divisors (see below), whose sum is σ = 7422702. Its totient is φ = 1596240.

The previous prime is 3990641. The next prime is 3990689. The reversal of 3990650 is 560993.

It can be written as a sum of positive squares in 3 ways, for example, as 3829849 + 160801 = 1957^2 + 401^2 .

It is a nialpdrome in base 13.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 39857 + ... + 39956.

Almost surely, 2^3990650 is an apocalyptic number.

3990650 is a deficient number, since it is larger than the sum of its proper divisors (3432052).

3990650 is a wasteful number, since it uses less digits than its factorization.

3990650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79825 (or 79820 counting only the distinct ones).

The product of its (nonzero) digits is 7290, while the sum is 32.

The square root of 3990650 is about 1997.6611324246. The cubic root of 3990650 is about 158.6163237016.

The spelling of 3990650 in words is "three million, nine hundred ninety thousand, six hundred fifty".