2271949 has 4 divisors (see below), whose sum is σ = 2275036. Its totient is φ = 2268864.

The previous prime is 2271937. The next prime is 2271953. The reversal of 2271949 is 9491722.

It is a happy number.

2271949 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, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 75625 + 2196324 = 275^2 + 1482^2 .

It is a cyclic number.

It is not a de Polignac number, because 2271949 - 2⁷ = 2271821 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2271989) 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, 277 + ... + 2149.

It is an arithmetic number, because the mean of its divisors is an integer number (568759).

2^2271949 is an apocalyptic number.

It is an amenable number.

2271949 is a deficient number, since it is larger than the sum of its proper divisors (3087).

2271949 is a wasteful number, since it uses less digits than its factorization.

2271949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3086.

The product of its digits is 9072, while the sum is 34.

The square root of 2271949 is about 1507.2985769250. The cubic root of 2271949 is about 131.4617853652.

The spelling of 2271949 in words is "two million, two hundred seventy-one thousand, nine hundred forty-nine".