8266865249 has 4 divisors (see below), whose sum is σ = 8701963440. Its totient is φ = 7831767060.

The previous prime is 8266865231. The next prime is 8266865273. The reversal of 8266865249 is 9425686628.

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 8266865249 - 2¹⁶ = 8266799713 is a prime.

It is a super-2 number, since 2×8266865249² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8266865194 and 8266865203.

It is not an unprimeable number, because it can be changed into a prime (8266865209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 217549067 + ... + 217549104.

It is an arithmetic number, because the mean of its divisors is an integer number (2175490860).

Almost surely, 2^8266865249 is an apocalyptic number.

It is an amenable number.

8266865249 is a deficient number, since it is larger than the sum of its proper divisors (435098191).

8266865249 is a wasteful number, since it uses less digits than its factorization.

8266865249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 435098190.

The product of its digits is 9953280, while the sum is 56.

The square root of 8266865249 is about 90922.3033639162. The cubic root of 8266865249 is about 2021.9959725008.

The spelling of 8266865249 in words is "eight billion, two hundred sixty-six million, eight hundred sixty-five thousand, two hundred forty-nine".