90500093 has 4 divisors (see below), whose sum is σ = 90519168. Its totient is φ = 90481020.

The previous prime is 90500089. The next prime is 90500099. The reversal of 90500093 is 39000509.

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 90500093 - 2² = 90500089 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 (90500099) 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, 3758 + ... + 13968.

It is an arithmetic number, because the mean of its divisors is an integer number (22629792).

Almost surely, 2^90500093 is an apocalyptic number.

It is an amenable number.

90500093 is a deficient number, since it is larger than the sum of its proper divisors (19075).

90500093 is a wasteful number, since it uses less digits than its factorization.

90500093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19074.

The product of its (nonzero) digits is 1215, while the sum is 26.

The square root of 90500093 is about 9513.1536831904. The cubic root of 90500093 is about 448.9689861069.

The spelling of 90500093 in words is "ninety million, five hundred thousand, ninety-three".