90852859 has 2 divisors, whose sum is σ = 90852860. Its totient is φ = 90852858.

The previous prime is 90852821. The next prime is 90852863. The reversal of 90852859 is 95825809.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 90852859 - 2⁹ = 90852347 is a prime.

It is not a weakly prime, because it can be changed into another prime (90852959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45426429 + 45426430.

It is an arithmetic number, because the mean of its divisors is an integer number (45426430).

Almost surely, 2^90852859 is an apocalyptic number.

90852859 is a deficient number, since it is larger than the sum of its proper divisors (1).

90852859 is an equidigital number, since it uses as much as digits as its factorization.

90852859 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 259200, while the sum is 46.

The square root of 90852859 is about 9531.6766101248. The cubic root of 90852859 is about 449.5515845877.

The spelling of 90852859 in words is "ninety million, eight hundred fifty-two thousand, eight hundred fifty-nine".