853221599 has 4 divisors (see below), whose sum is σ = 853280064. Its totient is φ = 853163136.

The previous prime is 853221563. The next prime is 853221661. The reversal of 853221599 is 995122358.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 853221599 - 2¹⁶ = 853156063 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (853221559) 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 3 ways as a sum of consecutive naturals, for example, 12914 + ... + 43280.

It is an arithmetic number, because the mean of its divisors is an integer number (213320016).

Almost surely, 2^853221599 is an apocalyptic number.

853221599 is a deficient number, since it is larger than the sum of its proper divisors (58465).

853221599 is a wasteful number, since it uses less digits than its factorization.

853221599 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58464.

The product of its digits is 194400, while the sum is 44.

The square root of 853221599 is about 29209.9571892874. The cubic root of 853221599 is about 948.4634807339.

The spelling of 853221599 in words is "eight hundred fifty-three million, two hundred twenty-one thousand, five hundred ninety-nine".