854991233 has 2 divisors, whose sum is σ = 854991234. Its totient is φ = 854991232.

The previous prime is 854991211. The next prime is 854991239. The reversal of 854991233 is 332199458.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 839087089 + 15904144 = 28967^2 + 3988^2 .

It is a cyclic number.

It is not a de Polignac number, because 854991233 - 2¹⁸ = 854729089 is a prime.

It is not a weakly prime, because it can be changed into another prime (854991239) 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 as a sum of consecutive naturals, namely, 427495616 + 427495617.

It is an arithmetic number, because the mean of its divisors is an integer number (427495617).

Almost surely, 2^854991233 is an apocalyptic number.

It is an amenable number.

854991233 is a deficient number, since it is larger than the sum of its proper divisors (1).

854991233 is an equidigital number, since it uses as much as digits as its factorization.

854991233 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 233280, while the sum is 44.

The square root of 854991233 is about 29240.2331215057. The cubic root of 854991233 is about 949.1187517558.

The spelling of 854991233 in words is "eight hundred fifty-four million, nine hundred ninety-one thousand, two hundred thirty-three".