89569679 has 2 divisors, whose sum is σ = 89569680. Its totient is φ = 89569678.

The previous prime is 89569673. The next prime is 89569681. The reversal of 89569679 is 97696598.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 89569679 - 2¹² = 89565583 is a prime.

Together with 89569681, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (89569673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44784839 + 44784840.

It is an arithmetic number, because the mean of its divisors is an integer number (44784840).

Almost surely, 2^89569679 is an apocalyptic number.

89569679 is a deficient number, since it is larger than the sum of its proper divisors (1).

89569679 is an equidigital number, since it uses as much as digits as its factorization.

89569679 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7348320, while the sum is 59.

The square root of 89569679 is about 9464.1258973029. The cubic root of 89569679 is about 447.4250952934.

The spelling of 89569679 in words is "eighty-nine million, five hundred sixty-nine thousand, six hundred seventy-nine".