13916426309 has 4 divisors (see below), whose sum is σ = 13932295404. Its totient is φ = 13900557216.

The previous prime is 13916426281. The next prime is 13916426323. The reversal of 13916426309 is 90362461931.

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

It can be written as a sum of positive squares in 2 ways, for example, as 8108462209 + 5807964100 = 90047^2 + 76210^2 .

It is a cyclic number.

It is not a de Polignac number, because 13916426309 - 2¹² = 13916422213 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 13916426309.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13916426339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7933232 + ... + 7934985.

It is an arithmetic number, because the mean of its divisors is an integer number (3483073851).

Almost surely, 2^13916426309 is an apocalyptic number.

It is an amenable number.

13916426309 is a deficient number, since it is larger than the sum of its proper divisors (15869095).

13916426309 is an equidigital number, since it uses as much as digits as its factorization.

13916426309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15869094.

The product of its (nonzero) digits is 209952, while the sum is 44.

The spelling of 13916426309 in words is "thirteen billion, nine hundred sixteen million, four hundred twenty-six thousand, three hundred nine".