16814939 has 4 divisors (see below), whose sum is σ = 17132256. Its totient is φ = 16497624.

The previous prime is 16814933. The next prime is 16814947. The reversal of 16814939 is 93941861.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16814939 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16814896 and 16814905.

It is not an unprimeable number, because it can be changed into a prime (16814933) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 158579 + ... + 158684.

It is an arithmetic number, because the mean of its divisors is an integer number (4283064).

Almost surely, 2^16814939 is an apocalyptic number.

16814939 is a deficient number, since it is larger than the sum of its proper divisors (317317).

16814939 is an equidigital number, since it uses as much as digits as its factorization.

16814939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317316.

The product of its digits is 46656, while the sum is 41.

The square root of 16814939 is about 4100.6022728375. The cubic root of 16814939 is about 256.1917254756.

The spelling of 16814939 in words is "sixteen million, eight hundred fourteen thousand, nine hundred thirty-nine".