8709219 has 12 divisors (see below), whose sum is σ = 13320216. Its totient is φ = 5464512.

The previous prime is 8709191. The next prime is 8709221. The reversal of 8709219 is 9129078.

It is a happy number.

It is not a de Polignac number, because 8709219 - 2⁵ = 8709187 is a prime.

It is a super-2 number, since 2×8709219² = 151700991179922, which contains 22 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is an Ulam number.

8709219 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (8709229) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28309 + ... + 28614.

It is an arithmetic number, because the mean of its divisors is an integer number (1110018).

Almost surely, 2^8709219 is an apocalyptic number.

8709219 is a deficient number, since it is larger than the sum of its proper divisors (4610997).

8709219 is a wasteful number, since it uses less digits than its factorization.

8709219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56946 (or 56943 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 36.

The square root of 8709219 is about 2951.1385938312. The cubic root of 8709219 is about 205.7436327593.

The spelling of 8709219 in words is "eight million, seven hundred nine thousand, two hundred nineteen".