849771443 has 2 divisors, whose sum is σ = 849771444. Its totient is φ = 849771442.

The previous prime is 849771389. The next prime is 849771451. The reversal of 849771443 is 344177948.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 849771443 - 2¹⁶ = 849705907 is a prime.

It is a super-2 number, since 2×849771443² = 1444223010676604498, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (849771463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 424885721 + 424885722.

It is an arithmetic number, because the mean of its divisors is an integer number (424885722).

Almost surely, 2^849771443 is an apocalyptic number.

849771443 is a deficient number, since it is larger than the sum of its proper divisors (1).

849771443 is an equidigital number, since it uses as much as digits as its factorization.

849771443 is an evil number, because the sum of its binary digits is even.

The product of its digits is 677376, while the sum is 47.

The square root of 849771443 is about 29150.8394904847. The cubic root of 849771443 is about 947.1833257370.

The spelling of 849771443 in words is "eight hundred forty-nine million, seven hundred seventy-one thousand, four hundred forty-three".