40004444431 has 12 divisors (see below), whose sum is σ = 46807347792. Its totient is φ = 33492082176.

The previous prime is 40004444401. The next prime is 40004444443. The reversal of 40004444431 is 13444440004.

It is not a de Polignac number, because 40004444431 - 2¹⁷ = 40004313359 is a prime.

It is a super-2 number, since 2×40004444431² (a number of 22 digits) contains 22 as substring.

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 40004444431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40004444401) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1532466 + ... + 1558351.

It is an arithmetic number, because the mean of its divisors is an integer number (3900612316).

Almost surely, 2^40004444431 is an apocalyptic number.

40004444431 is a deficient number, since it is larger than the sum of its proper divisors (6802903361).

40004444431 is an equidigital number, since it uses as much as digits as its factorization.

40004444431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3090910 (or 3090867 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 28.

Adding to 40004444431 its reverse (13444440004), we get a palindrome (53448884435).

The spelling of 40004444431 in words is "forty billion, four million, four hundred forty-four thousand, four hundred thirty-one".