2196879 has 4 divisors (see below), whose sum is σ = 2929176. Its totient is φ = 1464584.

The previous prime is 2196871. The next prime is 2196881. The reversal of 2196879 is 9786912.

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 2196879 - 2³ = 2196871 is a prime.

It is a D-number.

It is a self number, because there is not a number n which added to its sum of digits gives 2196879.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2196871) 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, 366144 + ... + 366149.

It is an arithmetic number, because the mean of its divisors is an integer number (732294).

2^2196879 is an apocalyptic number.

2196879 is a deficient number, since it is larger than the sum of its proper divisors (732297).

2196879 is an equidigital number, since it uses as much as digits as its factorization.

2196879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 732296.

The product of its digits is 54432, while the sum is 42.

The square root of 2196879 is about 1482.1872351360. The cubic root of 2196879 is about 129.9976133684.

The spelling of 2196879 in words is "two million, one hundred ninety-six thousand, eight hundred seventy-nine".