849791 has 4 divisors (see below), whose sum is σ = 863784. Its totient is φ = 835800.

The previous prime is 849773. The next prime is 849829. The reversal of 849791 is 197948.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 849791 - 2⁶ = 849727 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (849701) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6905 + ... + 7026.

It is an arithmetic number, because the mean of its divisors is an integer number (215946).

2⁸⁴⁹⁷⁹¹ is an apocalyptic number.

849791 is a deficient number, since it is larger than the sum of its proper divisors (13993).

849791 is a wasteful number, since it uses less digits than its factorization.

849791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13992.

The product of its digits is 18144, while the sum is 38.

The square root of 849791 is about 921.8410925968. The cubic root of 849791 is about 94.7190591974.

The spelling of 849791 in words is "eight hundred forty-nine thousand, seven hundred ninety-one".