13939534 has 16 divisors (see below), whose sum is σ = 24032736. Its totient is φ = 5940000.

The previous prime is 13939529. The next prime is 13939547. The reversal of 13939534 is 43593931.

It is a junction number, because it is equal to n+sod(n) for n = 13939493 and 13939502.

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, 217 + ... + 5284.

It is an arithmetic number, because the mean of its divisors is an integer number (1502046).

Almost surely, 2^13939534 is an apocalyptic number.

13939534 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

13939534 is a deficient number, since it is larger than the sum of its proper divisors (10093202).

13939534 is a wasteful number, since it uses less digits than its factorization.

13939534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5691.

The product of its digits is 43740, while the sum is 37.

The square root of 13939534 is about 3733.5685342578. The cubic root of 13939534 is about 240.6667455317. Note that the first 3 decimals are identical.

The spelling of 13939534 in words is "thirteen million, nine hundred thirty-nine thousand, five hundred thirty-four".