8782749 has 24 divisors (see below), whose sum is σ = 13453440. Its totient is φ = 5723136.

The previous prime is 8782747. The next prime is 8782759. The reversal of 8782749 is 9472878.

It is not a de Polignac number, because 8782749 - 2¹ = 8782747 is a prime.

8782749 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8782747) 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, 11037 + ... + 11805.

It is an arithmetic number, because the mean of its divisors is an integer number (560560).

Almost surely, 2^8782749 is an apocalyptic number.

It is an amenable number.

8782749 is a deficient number, since it is larger than the sum of its proper divisors (4670691).

8782749 is an equidigital number, since it uses as much as digits as its factorization.

8782749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 831 (or 819 counting only the distinct ones).

The product of its digits is 225792, while the sum is 45.

The square root of 8782749 is about 2963.5703129840. The cubic root of 8782749 is about 206.3210267772.

The spelling of 8782749 in words is "eight million, seven hundred eighty-two thousand, seven hundred forty-nine".