1140440403 has 8 divisors (see below), whose sum is σ = 1523153808. Its totient is φ = 759010304.

The previous prime is 1140440377. The next prime is 1140440429. The reversal of 1140440403 is 3040440411.

It is an interprime number because it is at equal distance from previous prime (1140440377) and next prime (1140440429).

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1140440403 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1140440403.

It is not an unprimeable number, because it can be changed into a prime (1140440473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 318750 + ... + 322307.

It is an arithmetic number, because the mean of its divisors is an integer number (190394226).

Almost surely, 2^1140440403 is an apocalyptic number.

1140440403 is a deficient number, since it is larger than the sum of its proper divisors (382713405).

1140440403 is an equidigital number, since it uses as much as digits as its factorization.

1140440403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 641653.

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

The square root of 1140440403 is about 33770.4072080868. The cubic root of 1140440403 is about 1044.7784312341.

Adding to 1140440403 its reverse (3040440411), we get a palindrome (4180880814).

The spelling of 1140440403 in words is "one billion, one hundred forty million, four hundred forty thousand, four hundred three".