8266399 has 4 divisors (see below), whose sum is σ = 8312760. Its totient is φ = 8220040.

The previous prime is 8266373. The next prime is 8266411. The reversal of 8266399 is 9936628.

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

It is a cyclic number.

It is not a de Polignac number, because 8266399 - 2¹³ = 8258207 is a prime.

8266399 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8266309) 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, 22912 + ... + 23269.

It is an arithmetic number, because the mean of its divisors is an integer number (2078190).

Almost surely, 2^8266399 is an apocalyptic number.

8266399 is a deficient number, since it is larger than the sum of its proper divisors (46361).

8266399 is a wasteful number, since it uses less digits than its factorization.

8266399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46360.

The product of its digits is 139968, while the sum is 43.

The square root of 8266399 is about 2875.1346055446. The cubic root of 8266399 is about 202.1957958441.

It can be divided in two parts, 826 and 6399, that added together give a square (7225 = 85²).

The spelling of 8266399 in words is "eight million, two hundred sixty-six thousand, three hundred ninety-nine".