89370509 has 4 divisors (see below), whose sum is σ = 94074240. Its totient is φ = 84666780.

The previous prime is 89370481. The next prime is 89370521. The reversal of 89370509 is 90507398.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 89370509 - 2¹⁶ = 89304973 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89370539) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2351837 + ... + 2351874.

It is an arithmetic number, because the mean of its divisors is an integer number (23518560).

Almost surely, 2^89370509 is an apocalyptic number.

It is an amenable number.

89370509 is a deficient number, since it is larger than the sum of its proper divisors (4703731).

89370509 is a wasteful number, since it uses less digits than its factorization.

89370509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4703730.

The product of its (nonzero) digits is 68040, while the sum is 41.

The square root of 89370509 is about 9453.5976749595. The cubic root of 89370509 is about 447.0932129312.

The spelling of 89370509 in words is "eighty-nine million, three hundred seventy thousand, five hundred nine".