8172457089 has 4 divisors (see below), whose sum is σ = 10896609456. Its totient is φ = 5448304724.

The previous prime is 8172457009. The next prime is 8172457093. The reversal of 8172457089 is 9807542718.

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 8172457089 - 2¹⁶ = 8172391553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8172457009) 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, 1362076179 + ... + 1362076184.

It is an arithmetic number, because the mean of its divisors is an integer number (2724152364).

Almost surely, 2^8172457089 is an apocalyptic number.

It is an amenable number.

8172457089 is a deficient number, since it is larger than the sum of its proper divisors (2724152367).

8172457089 is a wasteful number, since it uses less digits than its factorization.

8172457089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2724152366.

The product of its (nonzero) digits is 1128960, while the sum is 51.

The square root of 8172457089 is about 90401.6431764379. The cubic root of 8172457089 is about 2014.2693744383.

The spelling of 8172457089 in words is "eight billion, one hundred seventy-two million, four hundred fifty-seven thousand, eighty-nine".