849399143 has 2 divisors, whose sum is σ = 849399144. Its totient is φ = 849399142.

The previous prime is 849399139. The next prime is 849399149. The reversal of 849399143 is 341993948.

849399143 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 849399143 - 2² = 849399139 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 849399091 and 849399100.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (849399149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 424699571 + 424699572.

It is an arithmetic number, because the mean of its divisors is an integer number (424699572).

Almost surely, 2^849399143 is an apocalyptic number.

849399143 is a deficient number, since it is larger than the sum of its proper divisors (1).

849399143 is an equidigital number, since it uses as much as digits as its factorization.

849399143 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 839808, while the sum is 50.

The square root of 849399143 is about 29144.4530399869. The cubic root of 849399143 is about 947.0449795709.

The spelling of 849399143 in words is "eight hundred forty-nine million, three hundred ninety-nine thousand, one hundred forty-three".