90535859 has 2 divisors, whose sum is σ = 90535860. Its totient is φ = 90535858.

The previous prime is 90535853. The next prime is 90535901. The reversal of 90535859 is 95853509.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 90535859 - 2⁸ = 90535603 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (90535853) 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, 45267929 + 45267930.

It is an arithmetic number, because the mean of its divisors is an integer number (45267930).

Almost surely, 2^90535859 is an apocalyptic number.

90535859 is a deficient number, since it is larger than the sum of its proper divisors (1).

90535859 is an equidigital number, since it uses as much as digits as its factorization.

90535859 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 243000, while the sum is 44.

The square root of 90535859 is about 9515.0333157588. The cubic root of 90535859 is about 449.0281230990.

The spelling of 90535859 in words is "ninety million, five hundred thirty-five thousand, eight hundred fifty-nine".