849931 has 2 divisors, whose sum is σ = 849932. Its totient is φ = 849930.

The previous prime is 849923. The next prime is 849943. The reversal of 849931 is 139948.

849931 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 849931 - 2³ = 849923 is a prime.

It is a super-2 number, since 2×849931² = 1444765409522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (849991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 424965 + 424966.

It is an arithmetic number, because the mean of its divisors is an integer number (424966).

2⁸⁴⁹⁹³¹ is an apocalyptic number.

849931 is a deficient number, since it is larger than the sum of its proper divisors (1).

849931 is an equidigital number, since it uses as much as digits as its factorization.

849931 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7776, while the sum is 34.

The square root of 849931 is about 921.9170244659. The cubic root of 849931 is about 94.7242604528.

The spelling of 849931 in words is "eight hundred forty-nine thousand, nine hundred thirty-one".