8641879 has 4 divisors (see below), whose sum is σ = 8649376. Its totient is φ = 8634384.

The previous prime is 8641873. The next prime is 8641883. The reversal of 8641879 is 9781468.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8641879 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8641873) 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, 1614 + ... + 4459.

It is an arithmetic number, because the mean of its divisors is an integer number (2162344).

Almost surely, 2^8641879 is an apocalyptic number.

8641879 is a deficient number, since it is larger than the sum of its proper divisors (7497).

8641879 is a wasteful number, since it uses less digits than its factorization.

8641879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7496.

The product of its digits is 96768, while the sum is 43.

The square root of 8641879 is about 2939.7072983547. The cubic root of 8641879 is about 205.2119877304.

The spelling of 8641879 in words is "eight million, six hundred forty-one thousand, eight hundred seventy-nine".