1144404213 has 4 divisors (see below), whose sum is σ = 1525872288. Its totient is φ = 762936140.

The previous prime is 1144404211. The next prime is 1144404221. The reversal of 1144404213 is 3124044411.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3124044411 = 3 ⋅1041348137.

It is a cyclic number.

It is not a de Polignac number, because 1144404213 - 2¹ = 1144404211 is a prime.

It is a super-2 number, since 2×1144404213² = 2619322005464298738, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1144404211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 190734033 + ... + 190734038.

It is an arithmetic number, because the mean of its divisors is an integer number (381468072).

Almost surely, 2^1144404213 is an apocalyptic number.

It is an amenable number.

1144404213 is a deficient number, since it is larger than the sum of its proper divisors (381468075).

1144404213 is an equidigital number, since it uses as much as digits as its factorization.

1144404213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381468074.

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

The square root of 1144404213 is about 33829.0439267798. The cubic root of 1144404213 is about 1045.9874713185.

Adding to 1144404213 its reverse (3124044411), we get a palindrome (4268448624).

The spelling of 1144404213 in words is "one billion, one hundred forty-four million, four hundred four thousand, two hundred thirteen".