89245809 has 27 divisors (see below), whose sum is σ = 133706937. Its totient is φ = 57362184.

The previous prime is 89245787. The next prime is 89245817. The reversal of 89245809 is 90854298.

The square root of 89245809 is 9447.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 89245809 - 2⁵ = 89245777 is a prime.

It is not an unprimeable number, because it can be changed into a prime (89245879) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 1331994 + ... + 1332060.

Almost surely, 2^89245809 is an apocalyptic number.

89245809 is the 9447-th square number.

89245809 is the 4724-th centered octagonal number.

It is an amenable number.

89245809 is a deficient number, since it is larger than the sum of its proper divisors (44461128).

89245809 is an equidigital number, since it uses as much as digits as its factorization.

89245809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234 (or 117 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 45.

The cubic root of 89245809 is about 446.8851708706.

The spelling of 89245809 in words is "eighty-nine million, two hundred forty-five thousand, eight hundred nine".