2219905 has 8 divisors (see below), whose sum is σ = 2714472. Its totient is φ = 1742208.

The previous prime is 2219887. The next prime is 2219923. The reversal of 2219905 is 5099122.

2219905 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (2219887) and next prime (2219923).

It can be written as a sum of positive squares in 4 ways, for example, as 123201 + 2096704 = 351^2 + 1448^2 .

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 2219905 - 2¹¹ = 2217857 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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, 3924 + ... + 4453.

It is an arithmetic number, because the mean of its divisors is an integer number (339309).

2^2219905 is an apocalyptic number.

It is an amenable number.

2219905 is a deficient number, since it is larger than the sum of its proper divisors (494567).

2219905 is an equidigital number, since it uses as much as digits as its factorization.

2219905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8435.

The product of its (nonzero) digits is 1620, while the sum is 28.

The square root of 2219905 is about 1489.9345623214. The cubic root of 2219905 is about 130.4502141726.

The spelling of 2219905 in words is "two million, two hundred nineteen thousand, nine hundred five".