8671749 has 4 divisors (see below), whose sum is σ = 11562336. Its totient is φ = 5781164.

The previous prime is 8671739. The next prime is 8671769. The reversal of 8671749 is 9471768.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 8671749 - 2¹¹ = 8669701 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 8671749.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8671709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1445289 + ... + 1445294.

It is an arithmetic number, because the mean of its divisors is an integer number (2890584).

Almost surely, 2^8671749 is an apocalyptic number.

It is an amenable number.

8671749 is a deficient number, since it is larger than the sum of its proper divisors (2890587).

8671749 is a wasteful number, since it uses less digits than its factorization.

8671749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2890586.

The product of its digits is 84672, while the sum is 42.

The square root of 8671749 is about 2944.7833536612. The cubic root of 8671749 is about 205.4481490769.

The spelling of 8671749 in words is "eight million, six hundred seventy-one thousand, seven hundred forty-nine".