8879523509 has 2 divisors, whose sum is σ = 8879523510. Its totient is φ = 8879523508.

The previous prime is 8879523473. The next prime is 8879523539. The reversal of 8879523509 is 9053259788.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4593857284 + 4285666225 = 67778^2 + 65465^2 .

It is a cyclic number.

It is not a de Polignac number, because 8879523509 - 2²⁴ = 8862746293 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8879523539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4439761754 + 4439761755.

It is an arithmetic number, because the mean of its divisors is an integer number (4439761755).

Almost surely, 2^8879523509 is an apocalyptic number.

It is an amenable number.

8879523509 is a deficient number, since it is larger than the sum of its proper divisors (1).

8879523509 is an equidigital number, since it uses as much as digits as its factorization.

8879523509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5443200, while the sum is 56.

The square root of 8879523509 is about 94231.2236416359. The cubic root of 8879523509 is about 2070.7605713295.

The spelling of 8879523509 in words is "eight billion, eight hundred seventy-nine million, five hundred twenty-three thousand, five hundred nine".