8122749 has 8 divisors (see below), whose sum is σ = 11301312. Its totient is φ = 5179680.

The previous prime is 8122739. The next prime is 8122757. The reversal of 8122749 is 9472218.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 8122749 - 2⁴ = 8122733 is a prime.

8122749 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8122729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58792 + ... + 58929.

It is an arithmetic number, because the mean of its divisors is an integer number (1412664).

Almost surely, 2^8122749 is an apocalyptic number.

It is an amenable number.

8122749 is a deficient number, since it is larger than the sum of its proper divisors (3178563).

8122749 is a wasteful number, since it uses less digits than its factorization.

8122749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117747.

The product of its digits is 8064, while the sum is 33.

The square root of 8122749 is about 2850.0436838757. The cubic root of 8122749 is about 201.0177207712.

The spelling of 8122749 in words is "eight million, one hundred twenty-two thousand, seven hundred forty-nine".