2192979 has 4 divisors (see below), whose sum is σ = 2923976. Its totient is φ = 1461984.

The previous prime is 2192963. The next prime is 2193007. The reversal of 2192979 is 9792912.

It is a happy number.

2192979 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.

It is not a de Polignac number, because 2192979 - 2⁴ = 2192963 is a prime.

It is an Ulam number.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2192579) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 365494 + ... + 365499.

It is an arithmetic number, because the mean of its divisors is an integer number (730994).

2^2192979 is an apocalyptic number.

2192979 is a deficient number, since it is larger than the sum of its proper divisors (730997).

2192979 is an equidigital number, since it uses as much as digits as its factorization.

2192979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 730996.

The product of its digits is 20412, while the sum is 39.

The square root of 2192979 is about 1480.8710274700. The cubic root of 2192979 is about 129.9206419013.

The spelling of 2192979 in words is "two million, one hundred ninety-two thousand, nine hundred seventy-nine".