89779589 has 2 divisors, whose sum is σ = 89779590. Its totient is φ = 89779588.

The previous prime is 89779583. The next prime is 89779597. The reversal of 89779589 is 98597798.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 75777025 + 14002564 = 8705^2 + 3742^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-89779589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (89779583) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44889794 + 44889795.

It is an arithmetic number, because the mean of its divisors is an integer number (44889795).

Almost surely, 2^89779589 is an apocalyptic number.

It is an amenable number.

89779589 is a deficient number, since it is larger than the sum of its proper divisors (1).

89779589 is an equidigital number, since it uses as much as digits as its factorization.

89779589 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11430720, while the sum is 62.

The square root of 89779589 is about 9475.2091797490. The cubic root of 89779589 is about 447.7743419379.

The spelling of 89779589 in words is "eighty-nine million, seven hundred seventy-nine thousand, five hundred eighty-nine".