8102249 has 4 divisors (see below), whose sum is σ = 8137860. Its totient is φ = 8066640.

The previous prime is 8102221. The next prime is 8102257. The reversal of 8102249 is 9422018.

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 7327849 + 774400 = 2707^2 + 880^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8102249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8102849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17462 + ... + 17919.

It is an arithmetic number, because the mean of its divisors is an integer number (2034465).

Almost surely, 2^8102249 is an apocalyptic number.

It is an amenable number.

8102249 is a deficient number, since it is larger than the sum of its proper divisors (35611).

8102249 is a wasteful number, since it uses less digits than its factorization.

8102249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35610.

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 8102249 is about 2846.4449757548. Note that the first 3 decimals coincide. The cubic root of 8102249 is about 200.8484703998.

The spelling of 8102249 in words is "eight million, one hundred two thousand, two hundred forty-nine".