13884991 has 4 divisors (see below), whose sum is σ = 14615800. Its totient is φ = 13154184.

The previous prime is 13884967. The next prime is 13885009. The reversal of 13884991 is 19948831.

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

It is a cyclic number.

It is not a de Polignac number, because 13884991 - 2¹³ = 13876799 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 (13884191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 365376 + ... + 365413.

It is an arithmetic number, because the mean of its divisors is an integer number (3653950).

Almost surely, 2^13884991 is an apocalyptic number.

13884991 is a deficient number, since it is larger than the sum of its proper divisors (730809).

13884991 is an equidigital number, since it uses as much as digits as its factorization.

13884991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 730808.

The product of its digits is 62208, while the sum is 43.

The square root of 13884991 is about 3726.2569691314. The cubic root of 13884991 is about 240.3524393663.

The spelling of 13884991 in words is "thirteen million, eight hundred eighty-four thousand, nine hundred ninety-one".