40404442403 has 4 divisors (see below), whose sum is σ = 43512476448. Its totient is φ = 37296408360.

The previous prime is 40404442373. The next prime is 40404442417. The reversal of 40404442403 is 30424440404.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 40404442403 - 2¹⁰ = 40404441379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40404442433) 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 3 ways as a sum of consecutive naturals, for example, 1554017003 + ... + 1554017028.

It is an arithmetic number, because the mean of its divisors is an integer number (10878119112).

Almost surely, 2^40404442403 is an apocalyptic number.

40404442403 is a deficient number, since it is larger than the sum of its proper divisors (3108034045).

40404442403 is a wasteful number, since it uses less digits than its factorization.

40404442403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3108034044.

The product of its (nonzero) digits is 24576, while the sum is 29.

Adding to 40404442403 its reverse (30424440404), we get a palindrome (70828882807).

The spelling of 40404442403 in words is "forty billion, four hundred four million, four hundred forty-two thousand, four hundred three".