849697829 has 2 divisors, whose sum is σ = 849697830. Its totient is φ = 849697828.

The previous prime is 849697799. The next prime is 849697831. The reversal of 849697829 is 928796948.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 622502500 + 227195329 = 24950^2 + 15073^2 .

It is a cyclic number.

It is not a de Polignac number, because 849697829 - 2²⁰ = 848649253 is a prime.

Together with 849697831, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (849697729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 424848914 + 424848915.

It is an arithmetic number, because the mean of its divisors is an integer number (424848915).

Almost surely, 2^849697829 is an apocalyptic number.

It is an amenable number.

849697829 is a deficient number, since it is larger than the sum of its proper divisors (1).

849697829 is an equidigital number, since it uses as much as digits as its factorization.

849697829 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15676416, while the sum is 62.

The square root of 849697829 is about 29149.5768236865. The cubic root of 849697829 is about 947.1559740817.

The spelling of 849697829 in words is "eight hundred forty-nine million, six hundred ninety-seven thousand, eight hundred twenty-nine".