13974638 has 8 divisors (see below), whose sum is σ = 20999088. Its totient is φ = 6974944.

The previous prime is 13974601. The next prime is 13974661. The reversal of 13974638 is 83647931.

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 13974595 and 13974604.

It is a congruent number.

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, 4706 + ... + 7077.

It is an arithmetic number, because the mean of its divisors is an integer number (2624886).

Almost surely, 2^13974638 is an apocalyptic number.

13974638 is a deficient number, since it is larger than the sum of its proper divisors (7024450).

13974638 is a wasteful number, since it uses less digits than its factorization.

13974638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12378.

The product of its digits is 108864, while the sum is 41.

The square root of 13974638 is about 3738.2667106562. The cubic root of 13974638 is about 240.8686002826.

The spelling of 13974638 in words is "thirteen million, nine hundred seventy-four thousand, six hundred thirty-eight".