8709917449 has 32 divisors (see below), whose sum is σ = 9816422400. Its totient is φ = 7695367680.

The previous prime is 8709917443. The next prime is 8709917459. The reversal of 8709917449 is 9447199078.

It is a cyclic number.

It is not a de Polignac number, because 8709917449 - 2³ = 8709917441 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8709917393 and 8709917402.

It is not an unprimeable number, because it can be changed into a prime (8709917441) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1837887 + ... + 1842619.

It is an arithmetic number, because the mean of its divisors is an integer number (306763200).

Almost surely, 2^8709917449 is an apocalyptic number.

8709917449 is a gapful number since it is divisible by the number (89) formed by its first and last digit.

It is an amenable number.

8709917449 is a deficient number, since it is larger than the sum of its proper divisors (1106504951).

8709917449 is a wasteful number, since it uses less digits than its factorization.

8709917449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4905.

The product of its (nonzero) digits is 4572288, while the sum is 58.

The square root of 8709917449 is about 93326.9384958062. The cubic root of 8709917449 is about 2057.4913258627.

The spelling of 8709917449 in words is "eight billion, seven hundred nine million, nine hundred seventeen thousand, four hundred forty-nine".