13939406 has 16 divisors (see below), whose sum is σ = 22581888. Its totient is φ = 6415200.

The previous prime is 13939391. The next prime is 13939411. The reversal of 13939406 is 60493931.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 13571 + ... + 14561.

It is an arithmetic number, because the mean of its divisors is an integer number (1411368).

Almost surely, 2^13939406 is an apocalyptic number.

13939406 is a deficient number, since it is larger than the sum of its proper divisors (8642482).

13939406 is a wasteful number, since it uses less digits than its factorization.

13939406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1547.

The product of its (nonzero) digits is 17496, while the sum is 35.

The square root of 13939406 is about 3733.5513924413. The cubic root of 13939406 is about 240.6660088874. Note that the first 3 decimals are identical.

The spelling of 13939406 in words is "thirteen million, nine hundred thirty-nine thousand, four hundred six".