89509717369 has 2 divisors, whose sum is σ = 89509717370. Its totient is φ = 89509717368.

The previous prime is 89509717361. The next prime is 89509717379. The reversal of 89509717369 is 96371790598.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 58052083600 + 31457633769 = 240940^2 + 177363^2 .

It is a cyclic number.

It is not a de Polignac number, because 89509717369 - 2³ = 89509717361 is a prime.

It is a super-2 number, since 2×89509717369² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 89509717369.

It is not a weakly prime, because it can be changed into another prime (89509717361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44754858684 + 44754858685.

It is an arithmetic number, because the mean of its divisors is an integer number (44754858685).

Almost surely, 2^89509717369 is an apocalyptic number.

It is an amenable number.

89509717369 is a deficient number, since it is larger than the sum of its proper divisors (1).

89509717369 is an equidigital number, since it uses as much as digits as its factorization.

89509717369 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25719120, while the sum is 64.

The spelling of 89509717369 in words is "eighty-nine billion, five hundred nine million, seven hundred seventeen thousand, three hundred sixty-nine".