90320369 has 2 divisors, whose sum is σ = 90320370. Its totient is φ = 90320368.

The previous prime is 90320317. The next prime is 90320383. The reversal of 90320369 is 96302309.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49168144 + 41152225 = 7012^2 + 6415^2 .

It is an emirp because it is prime and its reverse (96302309) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 90320369 - 2¹² = 90316273 is a prime.

It is a super-2 number, since 2×90320369² = 16315538112592322, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (90320389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45160184 + 45160185.

It is an arithmetic number, because the mean of its divisors is an integer number (45160185).

Almost surely, 2^90320369 is an apocalyptic number.

It is an amenable number.

90320369 is a deficient number, since it is larger than the sum of its proper divisors (1).

90320369 is an equidigital number, since it uses as much as digits as its factorization.

90320369 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8748, while the sum is 32.

The square root of 90320369 is about 9503.7029099188. The cubic root of 90320369 is about 448.6715868712.

The spelling of 90320369 in words is "ninety million, three hundred twenty thousand, three hundred sixty-nine".