90008915 has 8 divisors (see below), whose sum is σ = 108109968. Its totient is φ = 71940960.

The previous prime is 90008911. The next prime is 90008923. The reversal of 90008915 is 51980009.

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

It is not a de Polignac number, because 90008915 - 2² = 90008911 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90008911) 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, 1832 + ... + 13541.

It is an arithmetic number, because the mean of its divisors is an integer number (13513746).

Almost surely, 2^90008915 is an apocalyptic number.

90008915 is a deficient number, since it is larger than the sum of its proper divisors (18101053).

90008915 is a wasteful number, since it uses less digits than its factorization.

90008915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16549.

The product of its (nonzero) digits is 3240, while the sum is 32.

The square root of 90008915 is about 9487.3028306258. The cubic root of 90008915 is about 448.1552711017.

The spelling of 90008915 in words is "ninety million, eight thousand, nine hundred fifteen".