8105749 has 4 divisors (see below), whose sum is σ = 8160300. Its totient is φ = 8051200.

The previous prime is 8105743. The next prime is 8105771. The reversal of 8105749 is 9475018.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3186225 + 4919524 = 1785^2 + 2218^2 .

It is a cyclic number.

It is not a de Polignac number, because 8105749 - 2⁷ = 8105621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8105743) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27052 + ... + 27349.

It is an arithmetic number, because the mean of its divisors is an integer number (2040075).

Almost surely, 2^8105749 is an apocalyptic number.

It is an amenable number.

8105749 is a deficient number, since it is larger than the sum of its proper divisors (54551).

8105749 is a wasteful number, since it uses less digits than its factorization.

8105749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54550.

The product of its (nonzero) digits is 10080, while the sum is 34.

The square root of 8105749 is about 2847.0597113513. The cubic root of 8105749 is about 200.8773869984.

It can be divided in two parts, 81057 and 49, that multiplied together give a palindrome (3971793).

The spelling of 8105749 in words is "eight million, one hundred five thousand, seven hundred forty-nine".