853720089 has 4 divisors (see below), whose sum is σ = 1138293456. Its totient is φ = 569146724.

The previous prime is 853720037. The next prime is 853720111. The reversal of 853720089 is 980027358.

853720089 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 853720089 - 2⁹ = 853719577 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 853720089.

It is not an unprimeable number, because it can be changed into a prime (853720019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 142286679 + ... + 142286684.

It is an arithmetic number, because the mean of its divisors is an integer number (284573364).

Almost surely, 2^853720089 is an apocalyptic number.

It is an amenable number.

853720089 is a deficient number, since it is larger than the sum of its proper divisors (284573367).

853720089 is a wasteful number, since it uses less digits than its factorization.

853720089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284573366.

The product of its (nonzero) digits is 120960, while the sum is 42.

The square root of 853720089 is about 29218.4888212926. The cubic root of 853720089 is about 948.6481562875.

The spelling of 853720089 in words is "eight hundred fifty-three million, seven hundred twenty thousand, eighty-nine".