13992745 has 8 divisors (see below), whose sum is σ = 18083016. Its totient is φ = 10333056.

The previous prime is 13992731. The next prime is 13992757. The reversal of 13992745 is 54729931.

It can be written as a sum of positive squares in 4 ways, for example, as 589824 + 13402921 = 768^2 + 3661^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 13992745 - 2⁹ = 13992233 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13992698 and 13992707.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 107572 + ... + 107701.

It is an arithmetic number, because the mean of its divisors is an integer number (2260377).

Almost surely, 2^13992745 is an apocalyptic number.

It is an amenable number.

13992745 is a deficient number, since it is larger than the sum of its proper divisors (4090271).

13992745 is a wasteful number, since it uses less digits than its factorization.

13992745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215291.

The product of its digits is 68040, while the sum is 40.

The square root of 13992745 is about 3740.6877709854. The cubic root of 13992745 is about 240.9725868856.

The spelling of 13992745 in words is "thirteen million, nine hundred ninety-two thousand, seven hundred forty-five".