89884309 has 2 divisors, whose sum is σ = 89884310. Its totient is φ = 89884308.

The previous prime is 89884297. The next prime is 89884339. The reversal of 89884309 is 90348898.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 82755409 + 7128900 = 9097^2 + 2670^2 .

It is a cyclic number.

It is not a de Polignac number, because 89884309 - 2⁷ = 89884181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (89884339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44942154 + 44942155.

It is an arithmetic number, because the mean of its divisors is an integer number (44942155).

Almost surely, 2^89884309 is an apocalyptic number.

It is an amenable number.

89884309 is a deficient number, since it is larger than the sum of its proper divisors (1).

89884309 is an equidigital number, since it uses as much as digits as its factorization.

89884309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 497664, while the sum is 49.

The square root of 89884309 is about 9480.7335686644. The cubic root of 89884309 is about 447.9483707642.

The spelling of 89884309 in words is "eighty-nine million, eight hundred eighty-four thousand, three hundred nine".