90144023 has 2 divisors, whose sum is σ = 90144024. Its totient is φ = 90144022.

The previous prime is 90144017. The next prime is 90144071. The reversal of 90144023 is 32044109.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 90144023 - 2¹⁸ = 89881879 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 90144023.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90147023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45072011 + 45072012.

It is an arithmetic number, because the mean of its divisors is an integer number (45072012).

Almost surely, 2^90144023 is an apocalyptic number.

90144023 is a deficient number, since it is larger than the sum of its proper divisors (1).

90144023 is an equidigital number, since it uses as much as digits as its factorization.

90144023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 90144023 is about 9494.4206247669. The cubic root of 90144023 is about 448.3793936852.

The spelling of 90144023 in words is "ninety million, one hundred forty-four thousand, twenty-three".