90009597 has 8 divisors (see below), whose sum is σ = 120099456. Its totient is φ = 59963072.

The previous prime is 90009583. The next prime is 90009607. The reversal of 90009597 is 79590009.

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

It is a cyclic number.

It is not a de Polignac number, because 90009597 - 2¹⁰ = 90008573 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90009547) 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, 5628 + ... + 14549.

It is an arithmetic number, because the mean of its divisors is an integer number (15012432).

Almost surely, 2^90009597 is an apocalyptic number.

It is an amenable number.

90009597 is a deficient number, since it is larger than the sum of its proper divisors (30089859).

90009597 is a wasteful number, since it uses less digits than its factorization.

90009597 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21667.

The product of its (nonzero) digits is 25515, while the sum is 39.

The square root of 90009597 is about 9487.3387733336. The cubic root of 90009597 is about 448.1564029938.

The spelling of 90009597 in words is "ninety million, nine thousand, five hundred ninety-seven".