89523709 has 8 divisors (see below), whose sum is σ = 99318240. Its totient is φ = 80005200.

The previous prime is 89523703. The next prime is 89523727. The reversal of 89523709 is 90732598.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-89523709 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89523703) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68322 + ... + 69619.

It is an arithmetic number, because the mean of its divisors is an integer number (12414780).

Almost surely, 2^89523709 is an apocalyptic number.

It is an amenable number.

89523709 is a deficient number, since it is larger than the sum of its proper divisors (9794531).

89523709 is a wasteful number, since it uses less digits than its factorization.

89523709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138011.

The product of its (nonzero) digits is 136080, while the sum is 43.

The square root of 89523709 is about 9461.6969408241. The cubic root of 89523709 is about 447.3485379449.

The spelling of 89523709 in words is "eighty-nine million, five hundred twenty-three thousand, seven hundred nine".