2199791 has 8 divisors (see below), whose sum is σ = 2477568. Its totient is φ = 1935000.

The previous prime is 2199781. The next prime is 2199803. The reversal of 2199791 is 1979912.

2199791 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 2199791 - 2¹⁰ = 2198767 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 (2199781) 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 7 ways as a sum of consecutive naturals, for example, 2885 + ... + 3566.

It is an arithmetic number, because the mean of its divisors is an integer number (309696).

2^2199791 is an apocalyptic number.

2199791 is a deficient number, since it is larger than the sum of its proper divisors (277777).

2199791 is a wasteful number, since it uses less digits than its factorization.

2199791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6493.

The product of its digits is 10206, while the sum is 38.

The square root of 2199791 is about 1483.1692418601. The cubic root of 2199791 is about 130.0550260151.

Subtracting from 2199791 its sum of digits (38), we obtain a triangular number (2199753 = T₂₀₉₇).

The spelling of 2199791 in words is "two million, one hundred ninety-nine thousand, seven hundred ninety-one".