90598169 has 2 divisors, whose sum is σ = 90598170. Its totient is φ = 90598168.

The previous prime is 90598139. The next prime is 90598177. The reversal of 90598169 is 96189509.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 83905600 + 6692569 = 9160^2 + 2587^2 .

It is a cyclic number.

It is not a de Polignac number, because 90598169 - 2¹² = 90594073 is a prime.

It is a super-2 number, since 2×90598169² = 16416056452305122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (90598139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45299084 + 45299085.

It is an arithmetic number, because the mean of its divisors is an integer number (45299085).

Almost surely, 2^90598169 is an apocalyptic number.

It is an amenable number.

90598169 is a deficient number, since it is larger than the sum of its proper divisors (1).

90598169 is an equidigital number, since it uses as much as digits as its factorization.

90598169 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 174960, while the sum is 47.

The square root of 90598169 is about 9518.3070448478. The cubic root of 90598169 is about 449.1311118536.

The spelling of 90598169 in words is "ninety million, five hundred ninety-eight thousand, one hundred sixty-nine".