849506461 has 2 divisors, whose sum is σ = 849506462. Its totient is φ = 849506460.

The previous prime is 849506459. The next prime is 849506477. The reversal of 849506461 is 164605948.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 834343225 + 15163236 = 28885^2 + 3894^2 .

It is a cyclic number.

It is not a de Polignac number, because 849506461 - 2¹ = 849506459 is a prime.

It is a super-2 number, since 2×849506461² = 1443322454561489042, which contains 22 as substring.

Together with 849506459, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (849506431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 424753230 + 424753231.

It is an arithmetic number, because the mean of its divisors is an integer number (424753231).

Almost surely, 2^849506461 is an apocalyptic number.

It is an amenable number.

849506461 is a deficient number, since it is larger than the sum of its proper divisors (1).

849506461 is an equidigital number, since it uses as much as digits as its factorization.

849506461 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 207360, while the sum is 43.

The square root of 849506461 is about 29146.2941212086. The cubic root of 849506461 is about 947.0848629379.

The spelling of 849506461 in words is "eight hundred forty-nine million, five hundred six thousand, four hundred sixty-one".