2101444 has 6 divisors (see below), whose sum is σ = 3677534. Its totient is φ = 1050720.

The previous prime is 2101439. The next prime is 2101447. The reversal of 2101444 is 4441012.

It can be written as a sum of positive squares in only one way, i.e., 1236544 + 864900 = 1112^2 + 930^2 .

It is not an unprimeable number, because it can be changed into a prime (2101447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 262677 + ... + 262684.

2^2101444 is an apocalyptic number.

It is an amenable number.

2101444 is a deficient number, since it is larger than the sum of its proper divisors (1576090).

2101444 is a wasteful number, since it uses less digits than its factorization.

2101444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 525365 (or 525363 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 2101444 is about 1449.6358163346. The cubic root of 2101444 is about 128.0872614613.

Adding to 2101444 its reverse (4441012), we get a palindrome (6542456).

The spelling of 2101444 in words is "two million, one hundred one thousand, four hundred forty-four".