39944885417 has 4 divisors (see below), whose sum is σ = 39946452480. Its totient is φ = 39943318356.

The previous prime is 39944885411. The next prime is 39944885437. The reversal of 39944885417 is 71458844993.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 71458844993 = 16189 ⋅4414037.

It is a cyclic number.

It is not a de Polignac number, because 39944885417 - 2²⁰ = 39943836841 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 39944885417.

It is not an unprimeable number, because it can be changed into a prime (39944885411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 744653 + ... + 796490.

It is an arithmetic number, because the mean of its divisors is an integer number (9986613120).

Almost surely, 2^39944885417 is an apocalyptic number.

It is an amenable number.

39944885417 is a deficient number, since it is larger than the sum of its proper divisors (1567063).

39944885417 is a wasteful number, since it uses less digits than its factorization.

39944885417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1567062.

The product of its digits is 34836480, while the sum is 62.

The spelling of 39944885417 in words is "thirty-nine billion, nine hundred forty-four million, eight hundred eighty-five thousand, four hundred seventeen".