2194789 has 4 divisors (see below), whose sum is σ = 2200960. Its totient is φ = 2188620.

The previous prime is 2194757. The next prime is 2194811. The reversal of 2194789 is 9874912.

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.

It is a cyclic number.

It is not a de Polignac number, because 2194789 - 2⁵ = 2194757 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 (2194739) 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, 2517 + ... + 3274.

It is an arithmetic number, because the mean of its divisors is an integer number (550240).

2^2194789 is an apocalyptic number.

It is an amenable number.

2194789 is a deficient number, since it is larger than the sum of its proper divisors (6171).

2194789 is an equidigital number, since it uses as much as digits as its factorization.

2194789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6170.

The product of its digits is 36288, while the sum is 40.

The square root of 2194789 is about 1481.4820282406. The cubic root of 2194789 is about 129.9563758952.

The spelling of 2194789 in words is "two million, one hundred ninety-four thousand, seven hundred eighty-nine".