8168249 has 4 divisors (see below), whose sum is σ = 8177664. Its totient is φ = 8158836.

The previous prime is 8168207. The next prime is 8168257. The reversal of 8168249 is 9428618.

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, and also an emirpimes, since its reverse is a distinct semiprime: 9428618 = 2 ⋅4714309.

It is a cyclic number.

It is not a de Polignac number, because 8168249 - 2⁸ = 8167993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8168269) 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, 3257 + ... + 5190.

It is an arithmetic number, because the mean of its divisors is an integer number (2044416).

Almost surely, 2^8168249 is an apocalyptic number.

It is an amenable number.

8168249 is a deficient number, since it is larger than the sum of its proper divisors (9415).

8168249 is an equidigital number, since it uses as much as digits as its factorization.

8168249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9414.

The product of its digits is 27648, while the sum is 38.

The square root of 8168249 is about 2858.0148705002. The cubic root of 8168249 is about 201.3923591852.

The spelling of 8168249 in words is "eight million, one hundred sixty-eight thousand, two hundred forty-nine".