2219985 has 12 divisors (see below), whose sum is σ = 3848052. Its totient is φ = 1183968.

The previous prime is 2219977. The next prime is 2219999. The reversal of 2219985 is 5899122.

It can be written as a sum of positive squares in 2 ways, for example, as 1718721 + 501264 = 1311^2 + 708^2 .

It is not a de Polignac number, because 2219985 - 2³ = 2219977 is a prime.

It is a Curzon number.

2219985 is a lucky number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 24622 + ... + 24711.

It is an arithmetic number, because the mean of its divisors is an integer number (320671).

2^2219985 is an apocalyptic number.

It is an amenable number.

2219985 is a deficient number, since it is larger than the sum of its proper divisors (1628067).

2219985 is a wasteful number, since it uses less digits than its factorization.

2219985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49344 (or 49341 counting only the distinct ones).

The product of its digits is 12960, while the sum is 36.

The square root of 2219985 is about 1489.9614088962. The cubic root of 2219985 is about 130.4517811904.

The spelling of 2219985 in words is "two million, two hundred nineteen thousand, nine hundred eighty-five".