13909927 has 4 divisors (see below), whose sum is σ = 14728176. Its totient is φ = 13091680.

The previous prime is 13909921. The next prime is 13909939. The reversal of 13909927 is 72990931.

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 13909927 - 2⁷ = 13909799 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 13909927.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13909921) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 409099 + ... + 409132.

It is an arithmetic number, because the mean of its divisors is an integer number (3682044).

Almost surely, 2^13909927 is an apocalyptic number.

13909927 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

13909927 is a deficient number, since it is larger than the sum of its proper divisors (818249).

13909927 is an equidigital number, since it uses as much as digits as its factorization.

13909927 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 818248.

The product of its (nonzero) digits is 30618, while the sum is 40.

The square root of 13909927 is about 3729.6014532387. The cubic root of 13909927 is about 240.4962359820.

The spelling of 13909927 in words is "thirteen million, nine hundred nine thousand, nine hundred twenty-seven".