853528947 has 4 divisors (see below), whose sum is σ = 1138038600. Its totient is φ = 569019296.

The previous prime is 853528943. The next prime is 853528961. The reversal of 853528947 is 749825358.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 853528947 - 2² = 853528943 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 853528947.

It is not an unprimeable number, because it can be changed into a prime (853528943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 142254822 + ... + 142254827.

It is an arithmetic number, because the mean of its divisors is an integer number (284509650).

Almost surely, 2^853528947 is an apocalyptic number.

853528947 is a deficient number, since it is larger than the sum of its proper divisors (284509653).

853528947 is a wasteful number, since it uses less digits than its factorization.

853528947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284509652.

The product of its digits is 2419200, while the sum is 51.

The square root of 853528947 is about 29215.2177298065. The cubic root of 853528947 is about 948.5773524247.

The spelling of 853528947 in words is "eight hundred fifty-three million, five hundred twenty-eight thousand, nine hundred forty-seven".