846641849 has 2 divisors, whose sum is σ = 846641850. Its totient is φ = 846641848.

The previous prime is 846641827. The next prime is 846641933. The reversal of 846641849 is 948146648.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 825527824 + 21114025 = 28732^2 + 4595^2 .

It is a cyclic number.

It is not a de Polignac number, because 846641849 - 2²⁸ = 578206393 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 846641797 and 846641806.

It is not a weakly prime, because it can be changed into another prime (846641819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 423320924 + 423320925.

It is an arithmetic number, because the mean of its divisors is an integer number (423320925).

Almost surely, 2^846641849 is an apocalyptic number.

It is an amenable number.

846641849 is a deficient number, since it is larger than the sum of its proper divisors (1).

846641849 is an equidigital number, since it uses as much as digits as its factorization.

846641849 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1327104, while the sum is 50.

The square root of 846641849 is about 29097.1106641192. The cubic root of 846641849 is about 946.0191123947.

The spelling of 846641849 in words is "eight hundred forty-six million, six hundred forty-one thousand, eight hundred forty-nine".