90315079 has 4 divisors (see below), whose sum is σ = 90343240. Its totient is φ = 90286920.

The previous prime is 90315073. The next prime is 90315083. The reversal of 90315079 is 97051309.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 90315079 - 2⁵ = 90315047 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 (90315073) 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, 8544 + ... + 15925.

It is an arithmetic number, because the mean of its divisors is an integer number (22585810).

Almost surely, 2^90315079 is an apocalyptic number.

90315079 is a deficient number, since it is larger than the sum of its proper divisors (28161).

90315079 is a wasteful number, since it uses less digits than its factorization.

90315079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28160.

The product of its (nonzero) digits is 8505, while the sum is 34.

The square root of 90315079 is about 9503.4245932716. The cubic root of 90315079 is about 448.6628272413.

The spelling of 90315079 in words is "ninety million, three hundred fifteen thousand, seventy-nine".