90253169 has 4 divisors (see below), whose sum is σ = 90720996. Its totient is φ = 89785344.

The previous prime is 90253159. The next prime is 90253171. The reversal of 90253169 is 96135209.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 26061025 + 64192144 = 5105^2 + 8012^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90253169 is a prime.

It is a super-2 number, since 2×90253169² = 16291269029085122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90253129) 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 in 3 ways as a sum of consecutive naturals, for example, 233624 + ... + 234009.

It is an arithmetic number, because the mean of its divisors is an integer number (22680249).

Almost surely, 2^90253169 is an apocalyptic number.

It is an amenable number.

90253169 is a deficient number, since it is larger than the sum of its proper divisors (467827).

90253169 is a wasteful number, since it uses less digits than its factorization.

90253169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 467826.

The product of its (nonzero) digits is 14580, while the sum is 35.

The square root of 90253169 is about 9500.1667880096. The cubic root of 90253169 is about 448.5602859852.

The spelling of 90253169 in words is "ninety million, two hundred fifty-three thousand, one hundred sixty-nine".