1144340403 has 32 divisors (see below), whose sum is σ = 1599516672. Its totient is φ = 727056000.

The previous prime is 1144340389. The next prime is 1144340429. The reversal of 1144340403 is 3040434411.

It is not a de Polignac number, because 1144340403 - 2⁹ = 1144339891 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1144340903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1154238 + ... + 1155228.

It is an arithmetic number, because the mean of its divisors is an integer number (49984896).

Almost surely, 2^1144340403 is an apocalyptic number.

1144340403 is a deficient number, since it is larger than the sum of its proper divisors (455176269).

1144340403 is a wasteful number, since it uses less digits than its factorization.

1144340403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1235.

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 1144340403 is about 33828.1007891368. The cubic root of 1144340403 is about 1045.9680301396.

Adding to 1144340403 its reverse (3040434411), we get a palindrome (4184774814).

The spelling of 1144340403 in words is "one billion, one hundred forty-four million, three hundred forty thousand, four hundred three".