853676389 has 4 divisors (see below), whose sum is σ = 853980556. Its totient is φ = 853372224.

The previous prime is 853676371. The next prime is 853676401. The reversal of 853676389 is 983676358.

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

It can be written as a sum of positive squares in 2 ways, for example, as 576720225 + 276956164 = 24015^2 + 16642^2 .

It is a cyclic number.

It is not a de Polignac number, because 853676389 - 2⁷ = 853676261 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 (853676309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 147834 + ... + 153499.

It is an arithmetic number, because the mean of its divisors is an integer number (213495139).

Almost surely, 2^853676389 is an apocalyptic number.

It is an amenable number.

853676389 is a deficient number, since it is larger than the sum of its proper divisors (304167).

853676389 is a wasteful number, since it uses less digits than its factorization.

853676389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304166.

The product of its digits is 6531840, while the sum is 55.

The square root of 853676389 is about 29217.7409975515. The cubic root of 853676389 is about 948.6319696270.

The spelling of 853676389 in words is "eight hundred fifty-three million, six hundred seventy-six thousand, three hundred eighty-nine".