89125709 has 4 divisors (see below), whose sum is σ = 89207616. Its totient is φ = 89043804.

The previous prime is 89125693. The next prime is 89125717. The reversal of 89125709 is 90752198.

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 89125709 - 2⁴ = 89125693 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89125769) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39299 + ... + 41504.

It is an arithmetic number, because the mean of its divisors is an integer number (22301904).

Almost surely, 2^89125709 is an apocalyptic number.

It is an amenable number.

89125709 is a deficient number, since it is larger than the sum of its proper divisors (81907).

89125709 is a wasteful number, since it uses less digits than its factorization.

89125709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81906.

The product of its (nonzero) digits is 45360, while the sum is 41.

The square root of 89125709 is about 9440.6413447392. The cubic root of 89125709 is about 446.6846198942.

The spelling of 89125709 in words is "eighty-nine million, one hundred twenty-five thousand, seven hundred nine".