839949827 has 2 divisors, whose sum is σ = 839949828. Its totient is φ = 839949826.

The previous prime is 839949769. The next prime is 839949907. The reversal of 839949827 is 728949938.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 839949827 - 2¹⁶ = 839884291 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (839949727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 419974913 + 419974914.

It is an arithmetic number, because the mean of its divisors is an integer number (419974914).

Almost surely, 2^839949827 is an apocalyptic number.

839949827 is a deficient number, since it is larger than the sum of its proper divisors (1).

839949827 is an equidigital number, since it uses as much as digits as its factorization.

839949827 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7838208, while the sum is 59.

The square root of 839949827 is about 28981.8879129707. The cubic root of 839949827 is about 943.5200099067.

The spelling of 839949827 in words is "eight hundred thirty-nine million, nine hundred forty-nine thousand, eight hundred twenty-seven".