90002321 has 8 divisors (see below), whose sum is σ = 93654144. Its totient is φ = 86422960.

The previous prime is 90002303. The next prime is 90002351. The reversal of 90002321 is 12320009.

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 90002321 - 2¹⁴ = 89985937 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 90002321.

It is not an unprimeable number, because it can be changed into a prime (90002351) 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, 15575 + ... + 20556.

It is an arithmetic number, because the mean of its divisors is an integer number (11706768).

Almost surely, 2^90002321 is an apocalyptic number.

It is an amenable number.

90002321 is a deficient number, since it is larger than the sum of its proper divisors (3651823).

90002321 is a wasteful number, since it uses less digits than its factorization.

90002321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36231.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 90002321 is about 9486.9553071573. The cubic root of 90002321 is about 448.1443269709.

The spelling of 90002321 in words is "ninety million, two thousand, three hundred twenty-one".