8321969 has 4 divisors (see below), whose sum is σ = 8334144. Its totient is φ = 8309796.

The previous prime is 8321941. The next prime is 8321977. The reversal of 8321969 is 9691238.

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 8321969 - 2¹⁶ = 8256433 is a prime.

It is a super-2 number, since 2×8321969² = 138510336073922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8329969) 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 3 ways as a sum of consecutive naturals, for example, 4997 + ... + 6450.

It is an arithmetic number, because the mean of its divisors is an integer number (2083536).

Almost surely, 2^8321969 is an apocalyptic number.

It is an amenable number.

8321969 is a deficient number, since it is larger than the sum of its proper divisors (12175).

8321969 is a wasteful number, since it uses less digits than its factorization.

8321969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12174.

The product of its digits is 23328, while the sum is 38.

The square root of 8321969 is about 2884.7823141443. The cubic root of 8321969 is about 202.6478643659.

It can be divided in two parts, 8 and 321969, that multiplied together give a palindrome (2575752).

The spelling of 8321969 in words is "eight million, three hundred twenty-one thousand, nine hundred sixty-nine".