853421684 has 12 divisors (see below), whose sum is σ = 1513947204. Its totient is φ = 420865344.

The previous prime is 853421677. The next prime is 853421711. The reversal of 853421684 is 486124358.

It can be written as a sum of positive squares in 2 ways, for example, as 344919184 + 508502500 = 18572^2 + 22550^2 .

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1461047 + ... + 1461630.

It is an arithmetic number, because the mean of its divisors is an integer number (126162267).

Almost surely, 2^853421684 is an apocalyptic number.

It is an amenable number.

853421684 is a deficient number, since it is larger than the sum of its proper divisors (660525520).

853421684 is a wasteful number, since it uses less digits than its factorization.

853421684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2922754 (or 2922752 counting only the distinct ones).

The product of its digits is 184320, while the sum is 41.

The square root of 853421684 is about 29213.3819336276. The cubic root of 853421684 is about 948.5376148484.

The spelling of 853421684 in words is "eight hundred fifty-three million, four hundred twenty-one thousand, six hundred eighty-four".