849461761 has 2 divisors, whose sum is σ = 849461762. Its totient is φ = 849461760.

The previous prime is 849461741. The next prime is 849461801. The reversal of 849461761 is 167164948.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 701985025 + 147476736 = 26495^2 + 12144^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-849461761 is a prime.

It is a super-2 number, since 2×849461761² = 1443170566802442242, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (849461731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 424730880 + 424730881.

It is an arithmetic number, because the mean of its divisors is an integer number (424730881).

Almost surely, 2^849461761 is an apocalyptic number.

It is an amenable number.

849461761 is a deficient number, since it is larger than the sum of its proper divisors (1).

849461761 is an equidigital number, since it uses as much as digits as its factorization.

849461761 is an evil number, because the sum of its binary digits is even.

The product of its digits is 290304, while the sum is 46.

The square root of 849461761 is about 29145.5272897918. The cubic root of 849461761 is about 947.0682511608.

The spelling of 849461761 in words is "eight hundred forty-nine million, four hundred sixty-one thousand, seven hundred sixty-one".