90054859 has 2 divisors, whose sum is σ = 90054860. Its totient is φ = 90054858.

The previous prime is 90054841. The next prime is 90054869. The reversal of 90054859 is 95845009.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 90054859 - 2²⁵ = 56500427 is a prime.

It is not a weakly prime, because it can be changed into another prime (90054869) 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, 45027429 + 45027430.

It is an arithmetic number, because the mean of its divisors is an integer number (45027430).

Almost surely, 2^90054859 is an apocalyptic number.

90054859 is a deficient number, since it is larger than the sum of its proper divisors (1).

90054859 is an equidigital number, since it uses as much as digits as its factorization.

90054859 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64800, while the sum is 40.

The square root of 90054859 is about 9489.7238632112. The cubic root of 90054859 is about 448.2315100071.

The spelling of 90054859 in words is "ninety million, fifty-four thousand, eight hundred fifty-nine".