849579919 has 2 divisors, whose sum is σ = 849579920. Its totient is φ = 849579918.

The previous prime is 849579883. The next prime is 849579923. The reversal of 849579919 is 919975948.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 849579919 - 2⁹ = 849579407 is a prime.

It is a super-2 number, since 2×849579919² = 1443572077536093122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (849579959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 424789959 + 424789960.

It is an arithmetic number, because the mean of its divisors is an integer number (424789960).

Almost surely, 2^849579919 is an apocalyptic number.

849579919 is a deficient number, since it is larger than the sum of its proper divisors (1).

849579919 is an equidigital number, since it uses as much as digits as its factorization.

849579919 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7348320, while the sum is 61.

The square root of 849579919 is about 29147.5542541737. The cubic root of 849579919 is about 947.1121607309.

The spelling of 849579919 in words is "eight hundred forty-nine million, five hundred seventy-nine thousand, nine hundred nineteen".