90822321 has 12 divisors (see below), whose sum is σ = 134239248. Its totient is φ = 59139864.

The previous prime is 90822317. The next prime is 90822353. The reversal of 90822321 is 12322809.

It is a happy number.

It is not a de Polignac number, because 90822321 - 2² = 90822317 is a prime.

It is not an unprimeable number, because it can be changed into a prime (90822301) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 116955 + ... + 117728.

It is an arithmetic number, because the mean of its divisors is an integer number (11186604).

Almost surely, 2^90822321 is an apocalyptic number.

It is an amenable number.

90822321 is a deficient number, since it is larger than the sum of its proper divisors (43416927).

90822321 is a wasteful number, since it uses less digits than its factorization.

90822321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234732 (or 234729 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 90822321 is about 9530.0745537483. The cubic root of 90822321 is about 449.5012102980.

The spelling of 90822321 in words is "ninety million, eight hundred twenty-two thousand, three hundred twenty-one".