90022393 has 2 divisors, whose sum is σ = 90022394. Its totient is φ = 90022392.

The previous prime is 90022379. The next prime is 90022403. The reversal of 90022393 is 39322009.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 85322169 + 4700224 = 9237^2 + 2168^2 .

It is a cyclic number.

It is not a de Polignac number, because 90022393 - 2⁹ = 90021881 is a prime.

It is not a weakly prime, because it can be changed into another prime (90022313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45011196 + 45011197.

It is an arithmetic number, because the mean of its divisors is an integer number (45011197).

Almost surely, 2^90022393 is an apocalyptic number.

It is an amenable number.

90022393 is a deficient number, since it is larger than the sum of its proper divisors (1).

90022393 is an equidigital number, since it uses as much as digits as its factorization.

90022393 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2916, while the sum is 28.

The square root of 90022393 is about 9488.0131218290. The cubic root of 90022393 is about 448.1776390167.

The spelling of 90022393 in words is "ninety million, twenty-two thousand, three hundred ninety-three".