7990957 has 8 divisors (see below), whose sum is σ = 8695736. Its totient is φ = 7299072.

The previous prime is 7990951. The next prime is 7990993. The reversal of 7990957 is 7590997.

7990957 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 72361 + 7918596 = 269^2 + 2814^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 7990957 - 2¹⁵ = 7958189 is a prime.

It is a Duffinian number.

7990957 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7990951) 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, 1908 + ... + 4429.

It is an arithmetic number, because the mean of its divisors is an integer number (1086967).

Almost surely, 2^7990957 is an apocalyptic number.

It is an amenable number.

7990957 is a deficient number, since it is larger than the sum of its proper divisors (704779).

7990957 is a wasteful number, since it uses less digits than its factorization.

7990957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6447.

The product of its (nonzero) digits is 178605, while the sum is 46.

The square root of 7990957 is about 2826.8280810831. The cubic root of 7990957 is about 199.9246132544.

The spelling of 7990957 in words is "seven million, nine hundred ninety thousand, nine hundred fifty-seven".