90836173 has 2 divisors, whose sum is σ = 90836174. Its totient is φ = 90836172.

The previous prime is 90836129. The next prime is 90836183. The reversal of 90836173 is 37163809.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 47513449 + 43322724 = 6893^2 + 6582^2 .

It is an emirp because it is prime and its reverse (37163809) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 90836173 - 2¹³ = 90827981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90836183) 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, 45418086 + 45418087.

It is an arithmetic number, because the mean of its divisors is an integer number (45418087).

Almost surely, 2^90836173 is an apocalyptic number.

It is an amenable number.

90836173 is a deficient number, since it is larger than the sum of its proper divisors (1).

90836173 is an equidigital number, since it uses as much as digits as its factorization.

90836173 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27216, while the sum is 37.

The square root of 90836173 is about 9530.8012779619. The cubic root of 90836173 is about 449.5240614142.

The spelling of 90836173 in words is "ninety million, eight hundred thirty-six thousand, one hundred seventy-three".