2194679 has 2 divisors, whose sum is σ = 2194680. Its totient is φ = 2194678.

The previous prime is 2194667. The next prime is 2194697. The reversal of 2194679 is 9764912.

Together with next prime (2194697) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2194679 - 2⁴ = 2194663 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2194639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1097339 + 1097340.

It is an arithmetic number, because the mean of its divisors is an integer number (1097340).

2^2194679 is an apocalyptic number.

2194679 is a deficient number, since it is larger than the sum of its proper divisors (1).

2194679 is an equidigital number, since it uses as much as digits as its factorization.

2194679 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27216, while the sum is 38.

The square root of 2194679 is about 1481.4449027892. Note that the first 3 decimals coincide. The cubic root of 2194679 is about 129.9542047769.

The spelling of 2194679 in words is "two million, one hundred ninety-four thousand, six hundred seventy-nine".