13939443 has 12 divisors (see below), whose sum is σ = 23011248. Its totient is φ = 7965360.

The previous prime is 13939411. The next prime is 13939463. The reversal of 13939443 is 34493931.

It is not a de Polignac number, because 13939443 - 2⁵ = 13939411 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13939398 and 13939407.

It is not an unprimeable number, because it can be changed into a prime (13939463) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 110568 + ... + 110693.

It is an arithmetic number, because the mean of its divisors is an integer number (1917604).

Almost surely, 2^13939443 is an apocalyptic number.

13939443 is a deficient number, since it is larger than the sum of its proper divisors (9071805).

13939443 is a wasteful number, since it uses less digits than its factorization.

13939443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221274 (or 221271 counting only the distinct ones).

The product of its digits is 34992, while the sum is 36.

The square root of 13939443 is about 3733.5563475057. The cubic root of 13939443 is about 240.6662218241. Note that the first 3 decimals are identical.

The spelling of 13939443 in words is "thirteen million, nine hundred thirty-nine thousand, four hundred forty-three".