8790872813 has 2 divisors, whose sum is σ = 8790872814. Its totient is φ = 8790872812.

The previous prime is 8790872789. The next prime is 8790872821. The reversal of 8790872813 is 3182780978.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8790562564 + 310249 = 93758^2 + 557^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8790872813 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8790872843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4395436406 + 4395436407.

It is an arithmetic number, because the mean of its divisors is an integer number (4395436407).

Almost surely, 2^8790872813 is an apocalyptic number.

It is an amenable number.

8790872813 is a deficient number, since it is larger than the sum of its proper divisors (1).

8790872813 is an equidigital number, since it uses as much as digits as its factorization.

8790872813 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1354752, while the sum is 53.

The square root of 8790872813 is about 93759.6545055495. The cubic root of 8790872813 is about 2063.8462102384.

The spelling of 8790872813 in words is "eight billion, seven hundred ninety million, eight hundred seventy-two thousand, eight hundred thirteen".