13884943397 has 4 divisors (see below), whose sum is σ = 14953015980. Its totient is φ = 12816870816.

The previous prime is 13884943361. The next prime is 13884943399. The reversal of 13884943397 is 79334948831.

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 2262809761 + 11622133636 = 47569^2 + 107806^2 .

It is a cyclic number.

It is not a de Polignac number, because 13884943397 - 2⁶ = 13884943333 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 (13884943399) 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, 534036272 + ... + 534036297.

It is an arithmetic number, because the mean of its divisors is an integer number (3738253995).

Almost surely, 2^13884943397 is an apocalyptic number.

It is an amenable number.

13884943397 is a deficient number, since it is larger than the sum of its proper divisors (1068072583).

13884943397 is a wasteful number, since it uses less digits than its factorization.

13884943397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1068072582.

The product of its digits is 15676416, while the sum is 59.

The spelling of 13884943397 in words is "thirteen billion, eight hundred eighty-four million, nine hundred forty-three thousand, three hundred ninety-seven".