90316217 has 2 divisors, whose sum is σ = 90316218. Its totient is φ = 90316216.

The previous prime is 90316199. The next prime is 90316231. The reversal of 90316217 is 71261309.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 68376361 + 21939856 = 8269^2 + 4684^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90316217 is a prime.

It is a super-3 number, since 3×90316217³ (a number of 25 digits) contains 333 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 90316217.

It is not a weakly prime, because it can be changed into another prime (90316277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45158108 + 45158109.

It is an arithmetic number, because the mean of its divisors is an integer number (45158109).

Almost surely, 2^90316217 is an apocalyptic number.

It is an amenable number.

90316217 is a deficient number, since it is larger than the sum of its proper divisors (1).

90316217 is an equidigital number, since it uses as much as digits as its factorization.

90316217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2268, while the sum is 29.

The square root of 90316217 is about 9503.4844662366. The cubic root of 90316217 is about 448.6647116669.

The spelling of 90316217 in words is "ninety million, three hundred sixteen thousand, two hundred seventeen".