8642369 has 4 divisors (see below), whose sum is σ = 8648496. Its totient is φ = 8636244.

The previous prime is 8642329. The next prime is 8642383. The reversal of 8642369 is 9632468.

8642369 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 8642369 - 2²⁰ = 7593793 is a prime.

It is a super-2 number, since 2×8642369² = 149381083864322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8642329) 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, 242 + ... + 4164.

It is an arithmetic number, because the mean of its divisors is an integer number (2162124).

Almost surely, 2^8642369 is an apocalyptic number.

It is an amenable number.

8642369 is a deficient number, since it is larger than the sum of its proper divisors (6127).

8642369 is a wasteful number, since it uses less digits than its factorization.

8642369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6126.

The product of its digits is 62208, while the sum is 38.

The square root of 8642369 is about 2939.7906388041. The cubic root of 8642369 is about 205.2158662069.

Subtracting 8642369 from its reverse (9632468), we obtain a palindrome (990099).

The spelling of 8642369 in words is "eight million, six hundred forty-two thousand, three hundred sixty-nine".