849731 has 2 divisors, whose sum is σ = 849732. Its totient is φ = 849730.

The previous prime is 849727. The next prime is 849733. The reversal of 849731 is 137948.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 849731 - 2² = 849727 is a prime.

It is a super-2 number, since 2×849731² = 1444085544722, which contains 22 as substring.

Together with 849733, it forms a pair of twin primes.

It is a Chen prime.

It is a plaindrome in base 13.

It is not a weakly prime, because it can be changed into another prime (849733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 424865 + 424866.

It is an arithmetic number, because the mean of its divisors is an integer number (424866).

2⁸⁴⁹⁷³¹ is an apocalyptic number.

849731 is a deficient number, since it is larger than the sum of its proper divisors (1).

849731 is an equidigital number, since it uses as much as digits as its factorization.

849731 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6048, while the sum is 32.

The square root of 849731 is about 921.8085484524. The cubic root of 849731 is about 94.7168299131.

The spelling of 849731 in words is "eight hundred forty-nine thousand, seven hundred thirty-one".