13966138 has 8 divisors (see below), whose sum is σ = 21021588. Its totient is φ = 6958944.

The previous prime is 13966103. The next prime is 13966153. The reversal of 13966138 is 83166931.

It can be written as a sum of positive squares in 2 ways, for example, as 10843849 + 3122289 = 3293^2 + 1767^2 .

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 = 13966097 and 13966106.

It is an unprimeable number.

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, 11331 + ... + 12502.

Almost surely, 2^13966138 is an apocalyptic number.

13966138 is a deficient number, since it is larger than the sum of its proper divisors (7055450).

13966138 is a wasteful number, since it uses less digits than its factorization.

13966138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24128.

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

The square root of 13966138 is about 3737.1296472025. The cubic root of 13966138 is about 240.8197546918.

The spelling of 13966138 in words is "thirteen million, nine hundred sixty-six thousand, one hundred thirty-eight".