440423053231079 has 2 divisors, whose sum is σ = 440423053231080. Its totient is φ = 440423053231078.

The previous prime is 440423053231061. The next prime is 440423053231127. The reversal of 440423053231079 is 970132350324044.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-440423053231079 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (440423053231879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 220211526615539 + 220211526615540.

It is an arithmetic number, because the mean of its divisors is an integer number (220211526615540).

Almost surely, 2^{440423053231079} is an apocalyptic number.

440423053231079 is a deficient number, since it is larger than the sum of its proper divisors (1).

440423053231079 is an equidigital number, since it uses as much as digits as its factorization.

440423053231079 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2177280, while the sum is 47.

The spelling of 440423053231079 in words is "four hundred forty trillion, four hundred twenty-three billion, fifty-three million, two hundred thirty-one thousand, seventy-nine".