849064169 has 2 divisors, whose sum is σ = 849064170. Its totient is φ = 849064168.

The previous prime is 849064147. The next prime is 849064171. The reversal of 849064169 is 961460948.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 714225625 + 134838544 = 26725^2 + 11612^2 .

It is a cyclic number.

It is not a de Polignac number, because 849064169 - 2⁸ = 849063913 is a prime.

It is a super-2 number, since 2×849064169² = 1441819926159321122, which contains 22 as substring.

Together with 849064171, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (849060169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 424532084 + 424532085.

It is an arithmetic number, because the mean of its divisors is an integer number (424532085).

Almost surely, 2^849064169 is an apocalyptic number.

It is an amenable number.

849064169 is a deficient number, since it is larger than the sum of its proper divisors (1).

849064169 is an equidigital number, since it uses as much as digits as its factorization.

849064169 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 373248, while the sum is 47.

The square root of 849064169 is about 29138.7056850506. The cubic root of 849064169 is about 946.9204691414.

The spelling of 849064169 in words is "eight hundred forty-nine million, sixty-four thousand, one hundred sixty-nine".