40004444401 has 2 divisors, whose sum is σ = 40004444402. Its totient is φ = 40004444400.

The previous prime is 40004444393. The next prime is 40004444443. The reversal of 40004444401 is 10444440004.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38531727025 + 1472717376 = 196295^2 + 38376^2 .

It is a cyclic number.

It is not a de Polignac number, because 40004444401 - 2³ = 40004444393 is a prime.

It is not a weakly prime, because it can be changed into another prime (40004444461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20002222200 + 20002222201.

It is an arithmetic number, because the mean of its divisors is an integer number (20002222201).

Almost surely, 2^40004444401 is an apocalyptic number.

It is an amenable number.

40004444401 is a deficient number, since it is larger than the sum of its proper divisors (1).

40004444401 is an equidigital number, since it uses as much as digits as its factorization.

40004444401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4096, while the sum is 25.

Adding to 40004444401 its reverse (10444440004), we get a palindrome (50448884405).

The spelling of 40004444401 in words is "forty billion, four million, four hundred forty-four thousand, four hundred one".