2199445 has 8 divisors (see below), whose sum is σ = 2703960. Its totient is φ = 1716480.

The previous prime is 2199433. The next prime is 2199479. The reversal of 2199445 is 5449912.

2199445 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 62001 + 2137444 = 249^2 + 1462^2 .

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

It is not a de Polignac number, because 2199445 - 2²¹ = 102293 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2199445.

It is a congruent 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, 5160 + ... + 5569.

It is an arithmetic number, because the mean of its divisors is an integer number (337995).

2^2199445 is an apocalyptic number.

It is an amenable number.

2199445 is a deficient number, since it is larger than the sum of its proper divisors (504515).

2199445 is a wasteful number, since it uses less digits than its factorization.

2199445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10775.

The product of its digits is 12960, while the sum is 34.

The square root of 2199445 is about 1483.0525951564. The cubic root of 2199445 is about 130.0482069736.

The spelling of 2199445 in words is "two million, one hundred ninety-nine thousand, four hundred forty-five".