90839233 has 2 divisors, whose sum is σ = 90839234. Its totient is φ = 90839232.

The previous prime is 90839137. The next prime is 90839237. The reversal of 90839233 is 33293809.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 75220929 + 15618304 = 8673^2 + 3952^2 .

It is a cyclic number.

It is not a de Polignac number, because 90839233 - 2⁹ = 90838721 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 90839192 and 90839201.

It is not a weakly prime, because it can be changed into another prime (90839237) by changing a digit.

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 as a sum of consecutive naturals, namely, 45419616 + 45419617.

It is an arithmetic number, because the mean of its divisors is an integer number (45419617).

Almost surely, 2^90839233 is an apocalyptic number.

It is an amenable number.

90839233 is a deficient number, since it is larger than the sum of its proper divisors (1).

90839233 is an equidigital number, since it uses as much as digits as its factorization.

90839233 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34992, while the sum is 37.

The square root of 90839233 is about 9530.9618087578. The cubic root of 90839233 is about 449.5291090663.

The spelling of 90839233 in words is "ninety million, eight hundred thirty-nine thousand, two hundred thirty-three".