1144400403 has 8 divisors (see below), whose sum is σ = 1551729600. Its totient is φ = 750002408.

The previous prime is 1144400377. The next prime is 1144400437. The reversal of 1144400403 is 3040044411.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1144400403 - 2¹⁷ = 1144269331 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1144400403.

It is not an unprimeable number, because it can be changed into a prime (1144401403) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3232593 + ... + 3232946.

It is an arithmetic number, because the mean of its divisors is an integer number (193966200).

Almost surely, 2^1144400403 is an apocalyptic number.

1144400403 is a deficient number, since it is larger than the sum of its proper divisors (407329197).

1144400403 is an equidigital number, since it uses as much as digits as its factorization.

1144400403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6465601.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 1144400403 is about 33828.9876141749. The cubic root of 1144400403 is about 1045.9863105350.

Adding to 1144400403 its reverse (3040044411), we get a palindrome (4184444814).

The spelling of 1144400403 in words is "one billion, one hundred forty-four million, four hundred thousand, four hundred three".