13916394399 has 4 divisors (see below), whose sum is σ = 18555192536. Its totient is φ = 9277596264.

The previous prime is 13916394353. The next prime is 13916394403. The reversal of 13916394399 is 99349361931.

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

It is not a de Polignac number, because 13916394399 - 2¹² = 13916390303 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 (13916394319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2319399064 + ... + 2319399069.

It is an arithmetic number, because the mean of its divisors is an integer number (4638798134).

Almost surely, 2^13916394399 is an apocalyptic number.

13916394399 is a deficient number, since it is larger than the sum of its proper divisors (4638798137).

13916394399 is an equidigital number, since it uses as much as digits as its factorization.

13916394399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4638798136.

The product of its digits is 4251528, while the sum is 57.

The spelling of 13916394399 in words is "thirteen billion, nine hundred sixteen million, three hundred ninety-four thousand, three hundred ninety-nine".