13973786 has 8 divisors (see below), whose sum is σ = 20998740. Its totient is φ = 6974208.

The previous prime is 13973767. The next prime is 13973789. The reversal of 13973786 is 68737931.

13973786 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 7946761 + 6027025 = 2819^2 + 2455^2 .

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

It is not an unprimeable number, because it can be changed into a prime (13973789) 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, 4901 + ... + 7208.

Almost surely, 2^13973786 is an apocalyptic number.

13973786 is a deficient number, since it is larger than the sum of its proper divisors (7024954).

13973786 is a wasteful number, since it uses less digits than its factorization.

13973786 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12688.

The product of its digits is 190512, while the sum is 44.

The square root of 13973786 is about 3738.1527523631. The cubic root of 13973786 is about 240.8637051237.

The spelling of 13973786 in words is "thirteen million, nine hundred seventy-three thousand, seven hundred eighty-six".