8709849 has 24 divisors (see below), whose sum is σ = 13252512. Its totient is φ = 5715360.

The previous prime is 8709839. The next prime is 8709871. The reversal of 8709849 is 9489078.

8709849 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 8709849 - 2⁵ = 8709817 is a prime.

It is a super-2 number, since 2×8709849² = 151722939205602, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (8709839) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17494 + ... + 17984.

It is an arithmetic number, because the mean of its divisors is an integer number (552188).

Almost surely, 2^8709849 is an apocalyptic number.

It is an amenable number.

8709849 is a deficient number, since it is larger than the sum of its proper divisors (4542663).

8709849 is an equidigital number, since it uses as much as digits as its factorization.

8709849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 579 (or 567 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The square root of 8709849 is about 2951.2453303648. The cubic root of 8709849 is about 205.7485936084.

The spelling of 8709849 in words is "eight million, seven hundred nine thousand, eight hundred forty-nine".