1244071997439 has 32 divisors (see below), whose sum is σ = 1698853492224. Its totient is φ = 809583989760.

The previous prime is 1244071997353. The next prime is 1244071997447. The reversal of 1244071997439 is 9347991704421.

It is a happy number.

It is not a de Polignac number, because 1244071997439 - 2⁹ = 1244071996927 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1244071997459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22525072 + ... + 22580234.

It is an arithmetic number, because the mean of its divisors is an integer number (53089171632).

Almost surely, 2^{1244071997439} is an apocalyptic number.

1244071997439 is a deficient number, since it is larger than the sum of its proper divisors (454781494785).

1244071997439 is a wasteful number, since it uses less digits than its factorization.

1244071997439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56287.

The product of its (nonzero) digits is 13716864, while the sum is 60.

The spelling of 1244071997439 in words is "one trillion, two hundred forty-four billion, seventy-one million, nine hundred ninety-seven thousand, four hundred thirty-nine".