40440004403993 has 2 divisors, whose sum is σ = 40440004403994. Its totient is φ = 40440004403992.

The previous prime is 40440004403959. The next prime is 40440004404029. The reversal of 40440004403993 is 39930440004404.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37433203319824 + 3006801084169 = 6118268^2 + 1734013^2 .

It is a cyclic number.

It is not a de Polignac number, because 40440004403993 - 2⁸ = 40440004403737 is a prime.

It is not a weakly prime, because it can be changed into another prime (40440004406993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20220002201996 + 20220002201997.

It is an arithmetic number, because the mean of its divisors is an integer number (20220002201997).

Almost surely, 2^{40440004403993} is an apocalyptic number.

It is an amenable number.

40440004403993 is a deficient number, since it is larger than the sum of its proper divisors (1).

40440004403993 is an equidigital number, since it uses as much as digits as its factorization.

40440004403993 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 746496, while the sum is 44.

The spelling of 40440004403993 in words is "forty trillion, four hundred forty billion, four million, four hundred three thousand, nine hundred ninety-three".