88518809 has 2 divisors, whose sum is σ = 88518810. Its totient is φ = 88518808.

The previous prime is 88518799. The next prime is 88518883. The reversal of 88518809 is 90881588.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 88416409 + 102400 = 9403^2 + 320^2 .

It is a cyclic number.

It is not a de Polignac number, because 88518809 - 2²⁰ = 87470233 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (88518709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44259404 + 44259405.

It is an arithmetic number, because the mean of its divisors is an integer number (44259405).

Almost surely, 2^88518809 is an apocalyptic number.

It is an amenable number.

88518809 is a deficient number, since it is larger than the sum of its proper divisors (1).

88518809 is an equidigital number, since it uses as much as digits as its factorization.

88518809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 184320, while the sum is 47.

The square root of 88518809 is about 9408.4434950740. The cubic root of 88518809 is about 445.6684126686.

The spelling of 88518809 in words is "eighty-eight million, five hundred eighteen thousand, eight hundred nine".