90093217 has 8 divisors (see below), whose sum is σ = 95514336. Its totient is φ = 84685632.

The previous prime is 90093203. The next prime is 90093229. The reversal of 90093217 is 71239009.

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 90093217 - 2⁷ = 90093089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90093247) 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, 12498 + ... + 18340.

It is an arithmetic number, because the mean of its divisors is an integer number (11939292).

Almost surely, 2^90093217 is an apocalyptic number.

It is an amenable number.

90093217 is a deficient number, since it is larger than the sum of its proper divisors (5421119).

90093217 is a wasteful number, since it uses less digits than its factorization.

90093217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6767.

The product of its (nonzero) digits is 3402, while the sum is 31.

The square root of 90093217 is about 9491.7446762963. The cubic root of 90093217 is about 448.2951409387.

The spelling of 90093217 in words is "ninety million, ninety-three thousand, two hundred seventeen".