853171399 has 4 divisors (see below), whose sum is σ = 853388536. Its totient is φ = 852954264.

The previous prime is 853171373. The next prime is 853171409. The reversal of 853171399 is 993171358.

It is a happy number.

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 853171399 - 2¹⁷ = 853040327 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 (853171999) 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, 102564 + ... + 110569.

It is an arithmetic number, because the mean of its divisors is an integer number (213347134).

Almost surely, 2^853171399 is an apocalyptic number.

853171399 is a deficient number, since it is larger than the sum of its proper divisors (217137).

853171399 is a wasteful number, since it uses less digits than its factorization.

853171399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217136.

The product of its digits is 204120, while the sum is 46.

The square root of 853171399 is about 29209.0978806262. The cubic root of 853171399 is about 948.4448791573. Note that the first 3 decimals are identical.

The spelling of 853171399 in words is "eight hundred fifty-three million, one hundred seventy-one thousand, three hundred ninety-nine".