89869517 has 2 divisors, whose sum is σ = 89869518. Its totient is φ = 89869516.

The previous prime is 89869513. The next prime is 89869541. The reversal of 89869517 is 71596898.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 89378116 + 491401 = 9454^2 + 701^2 .

It is a cyclic number.

It is not a de Polignac number, because 89869517 - 2² = 89869513 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (89869513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44934758 + 44934759.

It is an arithmetic number, because the mean of its divisors is an integer number (44934759).

Almost surely, 2^89869517 is an apocalyptic number.

It is an amenable number.

89869517 is a deficient number, since it is larger than the sum of its proper divisors (1).

89869517 is an equidigital number, since it uses as much as digits as its factorization.

89869517 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1088640, while the sum is 53.

The square root of 89869517 is about 9479.9534281556. The cubic root of 89869517 is about 447.9237968948.

The spelling of 89869517 in words is "eighty-nine million, eight hundred sixty-nine thousand, five hundred seventeen".