839849109 has 16 divisors (see below), whose sum is σ = 1232414784. Its totient is φ = 504492800.

The previous prime is 839849093. The next prime is 839849119. The reversal of 839849109 is 901948938.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 839849109 - 2⁴ = 839849093 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (839849119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 108882 + ... + 116339.

It is an arithmetic number, because the mean of its divisors is an integer number (77025924).

Almost surely, 2^839849109 is an apocalyptic number.

It is an amenable number.

839849109 is a deficient number, since it is larger than the sum of its proper divisors (392565675).

839849109 is a wasteful number, since it uses less digits than its factorization.

839849109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225348.

The product of its (nonzero) digits is 559872, while the sum is 51.

The square root of 839849109 is about 28980.1502584096. The cubic root of 839849109 is about 943.4822960482.

It can be divided in two parts, 839 and 849109, that added together give a palindrome (849948).

The spelling of 839849109 in words is "eight hundred thirty-nine million, eight hundred forty-nine thousand, one hundred nine".