13949641 has 4 divisors (see below), whose sum is σ = 13963392. Its totient is φ = 13935892.

The previous prime is 13949633. The next prime is 13949651. The reversal of 13949641 is 14694931.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 13949641 - 2³ = 13949633 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 13949641.

It is not an unprimeable number, because it can be changed into a prime (13949651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5221 + ... + 7426.

It is an arithmetic number, because the mean of its divisors is an integer number (3490848).

Almost surely, 2^13949641 is an apocalyptic number.

It is an amenable number.

13949641 is a deficient number, since it is larger than the sum of its proper divisors (13751).

13949641 is a wasteful number, since it uses less digits than its factorization.

13949641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13750.

The product of its digits is 23328, while the sum is 37.

The square root of 13949641 is about 3734.9218197976. The cubic root of 13949641 is about 240.7248974315.

The spelling of 13949641 in words is "thirteen million, nine hundred forty-nine thousand, six hundred forty-one".