13782939 has 8 divisors (see below), whose sum is σ = 18470400. Its totient is φ = 9142056.

The previous prime is 13782913. The next prime is 13782943. The reversal of 13782939 is 93928731.

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

It is not a de Polignac number, because 13782939 - 2²¹ = 11685787 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 13782939.

It is not an unprimeable number, because it can be changed into a prime (13782959) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10947 + ... + 12140.

It is an arithmetic number, because the mean of its divisors is an integer number (2308800).

Almost surely, 2^13782939 is an apocalyptic number.

13782939 is a deficient number, since it is larger than the sum of its proper divisors (4687461).

13782939 is a wasteful number, since it uses less digits than its factorization.

13782939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23289.

The product of its digits is 81648, while the sum is 42.

The square root of 13782939 is about 3712.5380806128. The cubic root of 13782939 is about 239.7621428166.

The spelling of 13782939 in words is "thirteen million, seven hundred eighty-two thousand, nine hundred thirty-nine".