1099539967447 has 4 divisors (see below), whose sum is σ = 1099667844400. Its totient is φ = 1099412090496.

The previous prime is 1099539967399. The next prime is 1099539967453. The reversal of 1099539967447 is 7447699359901.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1099539967447 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 1099539967447.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1099539962447) 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, 63925578 + ... + 63942775.

It is an arithmetic number, because the mean of its divisors is an integer number (274916961100).

Almost surely, 2^{1099539967447} is an apocalyptic number.

1099539967447 is a deficient number, since it is larger than the sum of its proper divisors (127876953).

1099539967447 is an equidigital number, since it uses as much as digits as its factorization.

1099539967447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127876952.

The product of its (nonzero) digits is 462944160, while the sum is 73.

The spelling of 1099539967447 in words is "one trillion, ninety-nine billion, five hundred thirty-nine million, nine hundred sixty-seven thousand, four hundred forty-seven".