4389109866647 has 16 divisors (see below), whose sum is σ = 4801973863680. Its totient is φ = 3978556243200.

The previous prime is 4389109866619. The next prime is 4389109866653. The reversal of 4389109866647 is 7466689019834.

It is not a de Polignac number, because 4389109866647 - 2¹² = 4389109862551 is a prime.

It is a super-2 number, since 2×4389109866647² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4389109863647) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 109787372 + ... + 109827342.

It is an arithmetic number, because the mean of its divisors is an integer number (300123366480).

Almost surely, 2^{4389109866647} is an apocalyptic number.

4389109866647 is a deficient number, since it is larger than the sum of its proper divisors (412863997033).

4389109866647 is a wasteful number, since it uses less digits than its factorization.

4389109866647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68614.

The product of its (nonzero) digits is 376233984, while the sum is 71.

The spelling of 4389109866647 in words is "four trillion, three hundred eighty-nine billion, one hundred nine million, eight hundred sixty-six thousand, six hundred forty-seven".