1144440213 has 16 divisors (see below), whose sum is σ = 1744404480. Its totient is φ = 653780016.

The previous prime is 1144440211. The next prime is 1144440239. The reversal of 1144440213 is 3120444411.

It is not a de Polignac number, because 1144440213 - 2¹ = 1144440211 is a prime.

It is a super-2 number, since 2×1144440213² = 2619486802262970738, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1144440211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 108508 + ... + 118586.

It is an arithmetic number, because the mean of its divisors is an integer number (109025280).

Almost surely, 2^1144440213 is an apocalyptic number.

It is an amenable number.

1144440213 is a deficient number, since it is larger than the sum of its proper divisors (599964267).

1144440213 is a wasteful number, since it uses less digits than its factorization.

1144440213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15496.

The product of its (nonzero) digits is 1536, while the sum is 24.

The square root of 1144440213 is about 33829.5760097581. The cubic root of 1144440213 is about 1045.9984392247.

Adding to 1144440213 its reverse (3120444411), we get a palindrome (4264884624).

The spelling of 1144440213 in words is "one billion, one hundred forty-four million, four hundred forty thousand, two hundred thirteen".