11404040403 has 8 divisors (see below), whose sum is σ = 17377585408. Its totient is φ = 6516594504.

The previous prime is 11404040393. The next prime is 11404040423. The reversal of 11404040403 is 30404040411.

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

It is not a de Polignac number, because 11404040403 - 2⁵ = 11404040371 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 543049543 = 11404040403 / (1 + 1 + 4 + 0 + 4 + 0 + 4 + 0 + 4 + 0 + 3).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11404040403.

It is not an unprimeable number, because it can be changed into a prime (11404040423) 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, 271524751 + ... + 271524792.

It is an arithmetic number, because the mean of its divisors is an integer number (2172198176).

Almost surely, 2^11404040403 is an apocalyptic number.

11404040403 is a deficient number, since it is larger than the sum of its proper divisors (5973545005).

11404040403 is an equidigital number, since it uses as much as digits as its factorization.

11404040403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 543049553.

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

Adding to 11404040403 its reverse (30404040411), we get a palindrome (41808080814).

The spelling of 11404040403 in words is "eleven billion, four hundred four million, forty thousand, four hundred three".