90584321 has 4 divisors (see below), whose sum is σ = 90687792. Its totient is φ = 90480852.

The previous prime is 90584317. The next prime is 90584363. The reversal of 90584321 is 12348509.

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, and also an emirpimes, since its reverse is a distinct semiprime: 12348509 = 31 ⋅398339.

It is a cyclic number.

It is not a de Polignac number, because 90584321 - 2² = 90584317 is a prime.

It is a super-2 number, since 2×90584321² = 16411038422062082, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90584311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50411 + ... + 52176.

It is an arithmetic number, because the mean of its divisors is an integer number (22671948).

Almost surely, 2^90584321 is an apocalyptic number.

It is an amenable number.

90584321 is a deficient number, since it is larger than the sum of its proper divisors (103471).

90584321 is a wasteful number, since it uses less digits than its factorization.

90584321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103470.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 90584321 is about 9517.5795767622. The cubic root of 90584321 is about 449.1082273420.

The spelling of 90584321 in words is "ninety million, five hundred eighty-four thousand, three hundred twenty-one".