90173093 has 8 divisors (see below), whose sum is σ = 93506400. Its totient is φ = 86854768.

The previous prime is 90173071. The next prime is 90173099. The reversal of 90173093 is 39037109.

It is a happy number.

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

It is not a de Polignac number, because 90173093 - 2⁶ = 90173029 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 (90173099) 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, 9338 + ... + 16356.

It is an arithmetic number, because the mean of its divisors is an integer number (11688300).

Almost surely, 2^90173093 is an apocalyptic number.

It is an amenable number.

90173093 is a deficient number, since it is larger than the sum of its proper divisors (3333307).

90173093 is a wasteful number, since it uses less digits than its factorization.

90173093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7491.

The product of its (nonzero) digits is 5103, while the sum is 32.

The square root of 90173093 is about 9495.9514004654. The cubic root of 90173093 is about 448.4275868901.

The spelling of 90173093 in words is "ninety million, one hundred seventy-three thousand, ninety-three".