3990957 has 8 divisors (see below), whose sum is σ = 5333280. Its totient is φ = 2654640.

The previous prime is 3990929. The next prime is 3990967. The reversal of 3990957 is 7590993.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3990957 - 2¹¹ = 3988909 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3990907) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 394 + ... + 2852.

It is an arithmetic number, because the mean of its divisors is an integer number (666660).

Almost surely, 2^3990957 is an apocalyptic number.

It is an amenable number.

3990957 is a deficient number, since it is larger than the sum of its proper divisors (1342323).

3990957 is a wasteful number, since it uses less digits than its factorization.

3990957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3003.

The product of its (nonzero) digits is 76545, while the sum is 42.

The square root of 3990957 is about 1997.7379708060. The cubic root of 3990957 is about 158.6203910392.

The spelling of 3990957 in words is "three million, nine hundred ninety thousand, nine hundred fifty-seven".