3990772 has 6 divisors (see below), whose sum is σ = 6983858. Its totient is φ = 1995384.

The previous prime is 3990761. The next prime is 3990773. The reversal of 3990772 is 2770993.

It can be written as a sum of positive squares in only one way, i.e., 3825936 + 164836 = 1956^2 + 406^2 .

It is a super-2 number, since 2×3990772² = 31852522311968, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3990773) by changing a digit.

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 as a sum of consecutive naturals, namely, 498843 + ... + 498850.

Almost surely, 2^3990772 is an apocalyptic number.

It is an amenable number.

3990772 is a deficient number, since it is larger than the sum of its proper divisors (2993086).

3990772 is a wasteful number, since it uses less digits than its factorization.

3990772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 997697 (or 997695 counting only the distinct ones).

The product of its (nonzero) digits is 23814, while the sum is 37.

The square root of 3990772 is about 1997.6916679007. The cubic root of 3990772 is about 158.6179400627.

The spelling of 3990772 in words is "three million, nine hundred ninety thousand, seven hundred seventy-two".