839428634 has 32 divisors (see below), whose sum is σ = 1396833984. Its totient is φ = 375153280.

The previous prime is 839428627. The next prime is 839428637. The reversal of 839428634 is 436824938.

It is not an unprimeable number, because it can be changed into a prime (839428637) 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 in 15 ways as a sum of consecutive naturals, for example, 424472 + ... + 426444.

It is an arithmetic number, because the mean of its divisors is an integer number (43651062).

Almost surely, 2^839428634 is an apocalyptic number.

839428634 is a deficient number, since it is larger than the sum of its proper divisors (557405350).

839428634 is a wasteful number, since it uses less digits than its factorization.

839428634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2302.

The product of its digits is 995328, while the sum is 47.

The square root of 839428634 is about 28972.8948156721. The cubic root of 839428634 is about 943.3248165923.

The spelling of 839428634 in words is "eight hundred thirty-nine million, four hundred twenty-eight thousand, six hundred thirty-four".