3990256975 has 24 divisors (see below), whose sum is σ = 5211987840. Its totient is φ = 3022074720.

The previous prime is 3990256969. The next prime is 3990257009. The reversal of 3990256975 is 5796520993.

It is a happy number.

It is not a de Polignac number, because 3990256975 - 2²¹ = 3988159823 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1149192 + ... + 1152658.

It is an arithmetic number, because the mean of its divisors is an integer number (217166160).

Almost surely, 2^3990256975 is an apocalyptic number.

3990256975 is a deficient number, since it is larger than the sum of its proper divisors (1221730865).

3990256975 is a wasteful number, since it uses less digits than its factorization.

3990256975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5919 (or 5914 counting only the distinct ones).

The product of its (nonzero) digits is 4592700, while the sum is 55.

The square root of 3990256975 is about 63168.4808666474. The cubic root of 3990256975 is about 1586.1111634381. Note that the first 4 decimals are identical.

The spelling of 3990256975 in words is "three billion, nine hundred ninety million, two hundred fifty-six thousand, nine hundred seventy-five".