4439887309691 has 2 divisors, whose sum is σ = 4439887309692. Its totient is φ = 4439887309690.

The previous prime is 4439887309667. The next prime is 4439887309747. The reversal of 4439887309691 is 1969037889344.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4439887309691 is a prime.

It is not a weakly prime, because it can be changed into another prime (4439887300691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2219943654845 + 2219943654846.

It is an arithmetic number, because the mean of its divisors is an integer number (2219943654846).

Almost surely, 2^{4439887309691} is an apocalyptic number.

4439887309691 is a deficient number, since it is larger than the sum of its proper divisors (1).

4439887309691 is an equidigital number, since it uses as much as digits as its factorization.

4439887309691 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 282175488, while the sum is 71.

The spelling of 4439887309691 in words is "four trillion, four hundred thirty-nine billion, eight hundred eighty-seven million, three hundred nine thousand, six hundred ninety-one".