853839605 has 16 divisors (see below), whose sum is σ = 1084596480. Its totient is φ = 644175168.

The previous prime is 853839601. The next prime is 853839629. The reversal of 853839605 is 506938358.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 853839605 - 2² = 853839601 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 853839605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (853839601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62237 + ... + 74706.

It is an arithmetic number, because the mean of its divisors is an integer number (67787280).

Almost surely, 2^853839605 is an apocalyptic number.

It is an amenable number.

853839605 is a deficient number, since it is larger than the sum of its proper divisors (230756875).

853839605 is a wasteful number, since it uses less digits than its factorization.

853839605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137020.

The product of its (nonzero) digits is 777600, while the sum is 47.

The square root of 853839605 is about 29220.5339615826. The cubic root of 853839605 is about 948.6924226867.

The spelling of 853839605 in words is "eight hundred fifty-three million, eight hundred thirty-nine thousand, six hundred five".