2194239 has 4 divisors (see below), whose sum is σ = 2925656. Its totient is φ = 1462824.

The previous prime is 2194229. The next prime is 2194243. The reversal of 2194239 is 9324912.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2194239 - 2¹² = 2190143 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2194229) 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, 365704 + ... + 365709.

It is an arithmetic number, because the mean of its divisors is an integer number (731414).

2^2194239 is an apocalyptic number.

2194239 is a deficient number, since it is larger than the sum of its proper divisors (731417).

2194239 is an equidigital number, since it uses as much as digits as its factorization.

2194239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 731416.

The product of its digits is 3888, while the sum is 30.

The square root of 2194239 is about 1481.2963916786. The cubic root of 2194239 is about 129.9455195778.

The spelling of 2194239 in words is "two million, one hundred ninety-four thousand, two hundred thirty-nine".