90322309 has 16 divisors (see below), whose sum is σ = 119235456. Its totient is φ = 66240000.

The previous prime is 90322289. The next prime is 90322321.

It is a happy number.

90322309 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 90322309 - 2⁹ = 90321797 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 (90328309) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33192 + ... + 35809.

It is an arithmetic number, because the mean of its divisors is an integer number (7452216).

Almost surely, 2^90322309 is an apocalyptic number.

It is an amenable number.

90322309 is a deficient number, since it is larger than the sum of its proper divisors (28913147).

90322309 is a wasteful number, since it uses less digits than its factorization.

90322309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69036.

The product of its (nonzero) digits is 2916, while the sum is 28.

The square root of 90322309 is about 9503.8049748509. The cubic root of 90322309 is about 448.6747992018.

The spelling of 90322309 in words is "ninety million, three hundred twenty-two thousand, three hundred nine".