90144833 has 2 divisors, whose sum is σ = 90144834. Its totient is φ = 90144832.

The previous prime is 90144799. The next prime is 90144883. The reversal of 90144833 is 33844109.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 83759104 + 6385729 = 9152^2 + 2527^2 .

It is a cyclic number.

It is not a de Polignac number, because 90144833 - 2¹⁴ = 90128449 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 90144833.

It is not a weakly prime, because it can be changed into another prime (90144883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45072416 + 45072417.

It is an arithmetic number, because the mean of its divisors is an integer number (45072417).

Almost surely, 2^90144833 is an apocalyptic number.

It is an amenable number.

90144833 is a deficient number, since it is larger than the sum of its proper divisors (1).

90144833 is an equidigital number, since it uses as much as digits as its factorization.

90144833 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 90144833 is about 9494.4632813024. The cubic root of 90144833 is about 448.3807366703.

The spelling of 90144833 in words is "ninety million, one hundred forty-four thousand, eight hundred thirty-three".