8457216269 has 4 divisors (see below), whose sum is σ = 8457401244. Its totient is φ = 8457031296.

The previous prime is 8457216233. The next prime is 8457216301. The reversal of 8457216269 is 9626127548.

8457216269 is digitally balanced in base 3, 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.

It can be written as a sum of positive squares in 2 ways, for example, as 6278660644 + 2178555625 = 79238^2 + 46675^2 .

It is a cyclic number.

It is not a de Polignac number, because 8457216269 - 2⁸ = 8457216013 is a prime.

It is a super-2 number, since 2×8457216269² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8457216769) 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, 31499 + ... + 133815.

It is an arithmetic number, because the mean of its divisors is an integer number (2114350311).

Almost surely, 2^8457216269 is an apocalyptic number.

It is an amenable number.

8457216269 is a deficient number, since it is larger than the sum of its proper divisors (184975).

8457216269 is a wasteful number, since it uses less digits than its factorization.

8457216269 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184974.

The product of its digits is 1451520, while the sum is 50.

The square root of 8457216269 is about 91963.1245065108. The cubic root of 8457216269 is about 2037.3977029901.

The spelling of 8457216269 in words is "eight billion, four hundred fifty-seven million, two hundred sixteen thousand, two hundred sixty-nine".