2201789 has 4 divisors (see below), whose sum is σ = 2331324. Its totient is φ = 2072256.

The previous prime is 2201761. The next prime is 2201807. The reversal of 2201789 is 9871022.

It is a happy number.

2201789 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1651225 + 550564 = 1285^2 + 742^2 .

It is a cyclic number.

It is not a de Polignac number, because 2201789 - 2⁸ = 2201533 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 (2201189) 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 3 ways as a sum of consecutive naturals, for example, 64742 + ... + 64775.

It is an arithmetic number, because the mean of its divisors is an integer number (582831).

2^2201789 is an apocalyptic number.

It is an amenable number.

2201789 is a deficient number, since it is larger than the sum of its proper divisors (129535).

2201789 is a wasteful number, since it uses less digits than its factorization.

2201789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129534.

The product of its (nonzero) digits is 2016, while the sum is 29.

The square root of 2201789 is about 1483.8426466442. The cubic root of 2201789 is about 130.0943890441.

The spelling of 2201789 in words is "two million, two hundred one thousand, seven hundred eighty-nine".