40004444443 has 2 divisors, whose sum is σ = 40004444444. Its totient is φ = 40004444442.

The previous prime is 40004444401. The next prime is 40004444453. The reversal of 40004444443 is 34444440004.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40004444443 is a prime.

It is a super-4 number, since 4×40004444443⁴ (a number of 44 digits) contains 4444 as substring.

It is not a weakly prime, because it can be changed into another prime (40004444453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20002222221 + 20002222222.

It is an arithmetic number, because the mean of its divisors is an integer number (20002222222).

Almost surely, 2^40004444443 is an apocalyptic number.

40004444443 is a deficient number, since it is larger than the sum of its proper divisors (1).

40004444443 is an equidigital number, since it uses as much as digits as its factorization.

40004444443 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 49152, while the sum is 31.

Adding to 40004444443 its reverse (34444440004), we get a palindrome (74448884447).

The spelling of 40004444443 in words is "forty billion, four million, four hundred forty-four thousand, four hundred forty-three".