849643 has 16 divisors (see below), whose sum is σ = 979776. Its totient is φ = 732160.

The previous prime is 849601. The next prime is 849649. The reversal of 849643 is 346948.

It is a cyclic number.

It is not a de Polignac number, because 849643 - 2⁹ = 849131 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 849599 and 849608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (849649) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16005 + ... + 16057.

It is an arithmetic number, because the mean of its divisors is an integer number (61236).

2⁸⁴⁹⁶⁴³ is an apocalyptic number.

849643 is a deficient number, since it is larger than the sum of its proper divisors (130133).

849643 is a wasteful number, since it uses less digits than its factorization.

849643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134.

The product of its digits is 20736, while the sum is 34.

The square root of 849643 is about 921.7608149623. The cubic root of 849643 is about 94.7135601062.

The spelling of 849643 in words is "eight hundred forty-nine thousand, six hundred forty-three".