90244159 has 2 divisors, whose sum is σ = 90244160. Its totient is φ = 90244158.

The previous prime is 90244153. The next prime is 90244163. The reversal of 90244159 is 95144209.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 90244159 - 2⁷ = 90244031 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90244153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45122079 + 45122080.

It is an arithmetic number, because the mean of its divisors is an integer number (45122080).

Almost surely, 2^90244159 is an apocalyptic number.

90244159 is a deficient number, since it is larger than the sum of its proper divisors (1).

90244159 is an equidigital number, since it uses as much as digits as its factorization.

90244159 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 90244159 is about 9499.6925739731. The cubic root of 90244159 is about 448.5453588540.

It can be divided in two parts, 902441 and 59, that added together give a square (902500 = 950²).

The spelling of 90244159 in words is "ninety million, two hundred forty-four thousand, one hundred fifty-nine".