90223459 has 2 divisors, whose sum is σ = 90223460. Its totient is φ = 90223458.

The previous prime is 90223433. The next prime is 90223477. The reversal of 90223459 is 95432209.

It is a strong prime.

It is an emirp because it is prime and its reverse (95432209) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90223459 is a prime.

It is a super-3 number, since 3×90223459³ (a number of 25 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (90223489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45111729 + 45111730.

It is an arithmetic number, because the mean of its divisors is an integer number (45111730).

Almost surely, 2^90223459 is an apocalyptic number.

90223459 is a deficient number, since it is larger than the sum of its proper divisors (1).

90223459 is an equidigital number, since it uses as much as digits as its factorization.

90223459 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19440, while the sum is 34.

The square root of 90223459 is about 9498.6030025473. The cubic root of 90223459 is about 448.5110607933.

The spelling of 90223459 in words is "ninety million, two hundred twenty-three thousand, four hundred fifty-nine".