90392273 has 4 divisors (see below), whose sum is σ = 91287348. Its totient is φ = 89497200.

The previous prime is 90392261. The next prime is 90392293. The reversal of 90392273 is 37229309.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 37229309 = 13 ⋅2863793.

It can be written as a sum of positive squares in 2 ways, for example, as 85692049 + 4700224 = 9257^2 + 2168^2 .

It is a cyclic number.

It is not a de Polignac number, because 90392273 - 2¹⁴ = 90375889 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (90392293) 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, 447386 + ... + 447587.

It is an arithmetic number, because the mean of its divisors is an integer number (22821837).

Almost surely, 2^90392273 is an apocalyptic number.

It is an amenable number.

90392273 is a deficient number, since it is larger than the sum of its proper divisors (895075).

90392273 is a wasteful number, since it uses less digits than its factorization.

90392273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 895074.

The product of its (nonzero) digits is 20412, while the sum is 35.

The square root of 90392273 is about 9507.4851038537. The cubic root of 90392273 is about 448.7906176977.

The spelling of 90392273 in words is "ninety million, three hundred ninety-two thousand, two hundred seventy-three".