40404040403 has 16 divisors (see below), whose sum is σ = 43240889664. Its totient is φ = 37618667520.

The previous prime is 40404040399. The next prime is 40404040451. The reversal of 40404040403 is 30404040404.

It is a cyclic number.

It is not a de Polignac number, because 40404040403 - 2² = 40404040399 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40404040003) 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 15 ways as a sum of consecutive naturals, for example, 5307626 + ... + 5315232.

It is an arithmetic number, because the mean of its divisors is an integer number (2702555604).

Almost surely, 2^40404040403 is an apocalyptic number.

40404040403 is a deficient number, since it is larger than the sum of its proper divisors (2836849261).

40404040403 is a wasteful number, since it uses less digits than its factorization.

40404040403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10942.

The product of its (nonzero) digits is 3072, while the sum is 23.

Adding to 40404040403 its reverse (30404040404), we get a palindrome (70808080807).

Subtracting from 40404040403 its reverse (30404040404), we obtain a palindrome (9999999999).

The spelling of 40404040403 in words is "forty billion, four hundred four million, forty thousand, four hundred three".