8957996813 has 8 divisors (see below), whose sum is σ = 9571957560. Its totient is φ = 8353704960.

The previous prime is 8957996797. The next prime is 8957996821. The reversal of 8957996813 is 3186997598.

It can be written as a sum of positive squares in 4 ways, for example, as 900780169 + 8057216644 = 30013^2 + 89762^2 .

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 8957996813 - 2⁴ = 8957996797 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8957996813.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8957996843) 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, 2415308 + ... + 2419013.

It is an arithmetic number, because the mean of its divisors is an integer number (1196494695).

Almost surely, 2^8957996813 is an apocalyptic number.

It is an amenable number.

8957996813 is a deficient number, since it is larger than the sum of its proper divisors (613960747).

8957996813 is a wasteful number, since it uses less digits than its factorization.

8957996813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4834447.

The product of its digits is 29393280, while the sum is 65.

The square root of 8957996813 is about 94646.6946755142. The cubic root of 8957996813 is about 2076.8428444319.

The spelling of 8957996813 in words is "eight billion, nine hundred fifty-seven million, nine hundred ninety-six thousand, eight hundred thirteen".