90159259 has 2 divisors, whose sum is σ = 90159260. Its totient is φ = 90159258.

The previous prime is 90159247. The next prime is 90159263. The reversal of 90159259 is 95295109.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 90159259 - 2⁵ = 90159227 is a prime.

It is not a weakly prime, because it can be changed into another prime (90159239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45079629 + 45079630.

It is an arithmetic number, because the mean of its divisors is an integer number (45079630).

Almost surely, 2^90159259 is an apocalyptic number.

90159259 is a deficient number, since it is larger than the sum of its proper divisors (1).

90159259 is an equidigital number, since it uses as much as digits as its factorization.

90159259 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36450, while the sum is 40.

The square root of 90159259 is about 9495.2229568347. Note that the first 3 decimals coincide. The cubic root of 90159259 is about 448.4046537205.

The spelling of 90159259 in words is "ninety million, one hundred fifty-nine thousand, two hundred fifty-nine".