13909442 has 8 divisors (see below), whose sum is σ = 20992656. Its totient is φ = 6911892.

The previous prime is 13909439. The next prime is 13909453. The reversal of 13909442 is 24490931.

It is a happy number.

13909442 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 13909399 and 13909408.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21008 + ... + 21659.

It is an arithmetic number, because the mean of its divisors is an integer number (2624082).

Almost surely, 2^13909442 is an apocalyptic number.

13909442 is a deficient number, since it is larger than the sum of its proper divisors (7083214).

13909442 is a wasteful number, since it uses less digits than its factorization.

13909442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42832.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 13909442 is about 3729.5364323197. The cubic root of 13909442 is about 240.4934408073.

The spelling of 13909442 in words is "thirteen million, nine hundred nine thousand, four hundred forty-two".