90869833 has 2 divisors, whose sum is σ = 90869834. Its totient is φ = 90869832.

The previous prime is 90869797. The next prime is 90869839. The reversal of 90869833 is 33896809.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 65739664 + 25130169 = 8108^2 + 5013^2 .

It is a cyclic number.

It is not a de Polignac number, because 90869833 - 2¹⁷ = 90738761 is a prime.

It is not a weakly prime, because it can be changed into another prime (90869839) 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, 45434916 + 45434917.

It is an arithmetic number, because the mean of its divisors is an integer number (45434917).

Almost surely, 2^90869833 is an apocalyptic number.

It is an amenable number.

90869833 is a deficient number, since it is larger than the sum of its proper divisors (1).

90869833 is an equidigital number, since it uses as much as digits as its factorization.

90869833 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 279936, while the sum is 46.

The square root of 90869833 is about 9532.5669680312. The cubic root of 90869833 is about 449.5795793532.

The spelling of 90869833 in words is "ninety million, eight hundred sixty-nine thousand, eight hundred thirty-three".