10917389909 has 8 divisors (see below), whose sum is σ = 11299003320. Its totient is φ = 10536120000.

The previous prime is 10917389897. The next prime is 10917389929. The reversal of 10917389909 is 90998371901.

It can be written as a sum of positive squares in 4 ways, for example, as 4616523025 + 6300866884 = 67945^2 + 79378^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10917389909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10917389929) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20342 + ... + 149159.

It is an arithmetic number, because the mean of its divisors is an integer number (1412375415).

Almost surely, 2^10917389909 is an apocalyptic number.

It is an amenable number.

10917389909 is a deficient number, since it is larger than the sum of its proper divisors (381613411).

10917389909 is a wasteful number, since it uses less digits than its factorization.

10917389909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171751.

The product of its (nonzero) digits is 1102248, while the sum is 56.

The spelling of 10917389909 in words is "ten billion, nine hundred seventeen million, three hundred eighty-nine thousand, nine hundred nine".