90969185 has 8 divisors (see below), whose sum is σ = 110244456. Its totient is φ = 72054400.

The previous prime is 90969161. The next prime is 90969223. The reversal of 90969185 is 58196909.

It can be written as a sum of positive squares in 4 ways, for example, as 61277584 + 29691601 = 7828^2 + 5449^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 90969185 - 2⁶ = 90969121 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89564 + ... + 90573.

It is an arithmetic number, because the mean of its divisors is an integer number (13780557).

Almost surely, 2^90969185 is an apocalyptic number.

It is an amenable number.

90969185 is a deficient number, since it is larger than the sum of its proper divisors (19275271).

90969185 is a wasteful number, since it uses less digits than its factorization.

90969185 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180243.

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

The square root of 90969185 is about 9537.7767325515. The cubic root of 90969185 is about 449.7433680757.

It can be divided in two parts, 9096 and 9185, that added together give a palindrome (18281).

The spelling of 90969185 in words is "ninety million, nine hundred sixty-nine thousand, one hundred eighty-five".