89407309 has 2 divisors, whose sum is σ = 89407310. Its totient is φ = 89407308.

The previous prime is 89407229. The next prime is 89407313. The reversal of 89407309 is 90370498.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 58293225 + 31114084 = 7635^2 + 5578^2 .

It is a cyclic number.

It is not a de Polignac number, because 89407309 - 2¹³ = 89399117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (89407009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44703654 + 44703655.

It is an arithmetic number, because the mean of its divisors is an integer number (44703655).

Almost surely, 2^89407309 is an apocalyptic number.

It is an amenable number.

89407309 is a deficient number, since it is larger than the sum of its proper divisors (1).

89407309 is an equidigital number, since it uses as much as digits as its factorization.

89407309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 89407309 is about 9455.5438235989. The cubic root of 89407309 is about 447.1545708767.

The spelling of 89407309 in words is "eighty-nine million, four hundred seven thousand, three hundred nine".