16894939 has 4 divisors (see below), whose sum is σ = 17024040. Its totient is φ = 16765840.

The previous prime is 16894931. The next prime is 16894963. The reversal of 16894939 is 93949861.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93949861 = 3943 ⋅23827.

It is a cyclic number.

It is not a de Polignac number, because 16894939 - 2³ = 16894931 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16894892 and 16894901.

It is not an unprimeable number, because it can be changed into a prime (16894931) 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, 64354 + ... + 64615.

It is an arithmetic number, because the mean of its divisors is an integer number (4256010).

Almost surely, 2^16894939 is an apocalyptic number.

16894939 is a deficient number, since it is larger than the sum of its proper divisors (129101).

16894939 is a wasteful number, since it uses less digits than its factorization.

16894939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129100.

The product of its digits is 419904, while the sum is 49.

The square root of 16894939 is about 4110.3453626186. The cubic root of 16894939 is about 256.5973750847.

The spelling of 16894939 in words is "sixteen million, eight hundred ninety-four thousand, nine hundred thirty-nine".