13789639 has 4 divisors (see below), whose sum is σ = 13849056. Its totient is φ = 13730224.

The previous prime is 13789621. The next prime is 13789663. The reversal of 13789639 is 93698731.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 13789639 - 2¹³ = 13781447 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13789609) by changing a digit.

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, 29359 + ... + 29824.

It is an arithmetic number, because the mean of its divisors is an integer number (3462264).

Almost surely, 2^13789639 is an apocalyptic number.

13789639 is a deficient number, since it is larger than the sum of its proper divisors (59417).

13789639 is an equidigital number, since it uses as much as digits as its factorization.

13789639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59416.

The product of its digits is 244944, while the sum is 46.

The square root of 13789639 is about 3713.4403186264. The cubic root of 13789639 is about 239.8009866397.

The spelling of 13789639 in words is "thirteen million, seven hundred eighty-nine thousand, six hundred thirty-nine".