440400400441 has 2 divisors, whose sum is σ = 440400400442. Its totient is φ = 440400400440.

The previous prime is 440400400409. The next prime is 440400400459. The reversal of 440400400441 is 144004004044.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 323651761216 + 116748639225 = 568904^2 + 341685^2 .

It is a cyclic number.

It is not a de Polignac number, because 440400400441 - 2⁵ = 440400400409 is a prime.

It is not a weakly prime, because it can be changed into another prime (440400400481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 220200200220 + 220200200221.

It is an arithmetic number, because the mean of its divisors is an integer number (220200200221).

Almost surely, 2^440400400441 is an apocalyptic number.

It is an amenable number.

440400400441 is a deficient number, since it is larger than the sum of its proper divisors (1).

440400400441 is an equidigital number, since it uses as much as digits as its factorization.

440400400441 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 440400400441 its reverse (144004004044), we get a palindrome (584404404485).

The spelling of 440400400441 in words is "four hundred forty billion, four hundred million, four hundred thousand, four hundred forty-one".