89807969 has 2 divisors, whose sum is σ = 89807970. Its totient is φ = 89807968.

The previous prime is 89807959. The next prime is 89807981. The reversal of 89807969 is 96970898.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 69889600 + 19918369 = 8360^2 + 4463^2 .

It is a cyclic number.

It is not a de Polignac number, because 89807969 - 2⁴ = 89807953 is a prime.

It is a super-2 number, since 2×89807969² = 16130942591809922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (89807959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44903984 + 44903985.

It is an arithmetic number, because the mean of its divisors is an integer number (44903985).

Almost surely, 2^89807969 is an apocalyptic number.

It is an amenable number.

89807969 is a deficient number, since it is larger than the sum of its proper divisors (1).

89807969 is an equidigital number, since it uses as much as digits as its factorization.

89807969 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1959552, while the sum is 56.

The square root of 89807969 is about 9476.7066536851. The cubic root of 89807969 is about 447.8215185742.

The spelling of 89807969 in words is "eighty-nine million, eight hundred seven thousand, nine hundred sixty-nine".