2219791 has 8 divisors (see below), whose sum is σ = 2549664. Its totient is φ = 1893120.

The previous prime is 2219773. The next prime is 2219797. The reversal of 2219791 is 1979122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2219791 - 2⁹ = 2219279 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 (2219797) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 951 + ... + 2311.

It is an arithmetic number, because the mean of its divisors is an integer number (318708).

2^2219791 is an apocalyptic number.

2219791 is a deficient number, since it is larger than the sum of its proper divisors (329873).

2219791 is a wasteful number, since it uses less digits than its factorization.

2219791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1601.

The product of its digits is 2268, while the sum is 31.

The square root of 2219791 is about 1489.8963051166. The cubic root of 2219791 is about 130.4479811073.

The spelling of 2219791 in words is "two million, two hundred nineteen thousand, seven hundred ninety-one".