40444400399999 has 4 divisors (see below), whose sum is σ = 40444413728664. Its totient is φ = 40444387071336.

The previous prime is 40444400399993. The next prime is 40444400400023. The reversal of 40444400399999 is 99999300444404.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 40444400399999 - 2⁴ = 40444400399983 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40444400399993) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 343844 + ... + 9000390.

It is an arithmetic number, because the mean of its divisors is an integer number (10111103432166).

Almost surely, 2^{40444400399999} is an apocalyptic number.

40444400399999 is a deficient number, since it is larger than the sum of its proper divisors (13328665).

40444400399999 is an equidigital number, since it uses as much as digits as its factorization.

40444400399999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13328664.

The product of its (nonzero) digits is 181398528, while the sum is 68.

The spelling of 40444400399999 in words is "forty trillion, four hundred forty-four billion, four hundred million, three hundred ninety-nine thousand, nine hundred ninety-nine".