7990957807 has 4 divisors (see below), whose sum is σ = 9132523216. Its totient is φ = 6849392400.

The previous prime is 7990957789. The next prime is 7990957811. The reversal of 7990957807 is 7087590997.

7990957807 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 7990957807 - 2¹¹ = 7990955759 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7990957837) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 570782694 + ... + 570782707.

It is an arithmetic number, because the mean of its divisors is an integer number (2283130804).

Almost surely, 2^7990957807 is an apocalyptic number.

7990957807 is a deficient number, since it is larger than the sum of its proper divisors (1141565409).

7990957807 is a wasteful number, since it uses less digits than its factorization.

7990957807 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1141565408.

The product of its (nonzero) digits is 10001880, while the sum is 61.

The square root of 7990957807 is about 89392.1574132765. The cubic root of 7990957807 is about 1999.2461998450.

The spelling of 7990957807 in words is "seven billion, nine hundred ninety million, nine hundred fifty-seven thousand, eight hundred seven".