13949187 has 16 divisors (see below), whose sum is σ = 21465600. Its totient is φ = 7892352.

The previous prime is 13949179. The next prime is 13949191. The reversal of 13949187 is 78194931.

It is a happy number.

It is not a de Polignac number, because 13949187 - 2³ = 13949179 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13949107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1062 + ... + 5387.

It is an arithmetic number, because the mean of its divisors is an integer number (1341600).

Almost surely, 2^13949187 is an apocalyptic number.

13949187 is a deficient number, since it is larger than the sum of its proper divisors (7516413).

13949187 is a wasteful number, since it uses less digits than its factorization.

13949187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6562.

The product of its digits is 54432, while the sum is 42.

The square root of 13949187 is about 3734.8610415918. The cubic root of 13949187 is about 240.7222858878.

The spelling of 13949187 in words is "thirteen million, nine hundred forty-nine thousand, one hundred eighty-seven".