16939927 has 4 divisors (see below), whose sum is σ = 16959280. Its totient is φ = 16920576.

The previous prime is 16939907. The next prime is 16939931. The reversal of 16939927 is 72993961.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 72993961 = 47 ⋅1553063.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16939927 is a prime.

It is a super-2 number, since 2×16939927² = 573922253530658, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16939907) 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, 8298 + ... + 10135.

It is an arithmetic number, because the mean of its divisors is an integer number (4239820).

Almost surely, 2^16939927 is an apocalyptic number.

16939927 is a deficient number, since it is larger than the sum of its proper divisors (19353).

16939927 is an equidigital number, since it uses as much as digits as its factorization.

16939927 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19352.

The product of its digits is 183708, while the sum is 46.

The square root of 16939927 is about 4115.8142572278. The cubic root of 16939927 is about 256.8249298478.

The spelling of 16939927 in words is "sixteen million, nine hundred thirty-nine thousand, nine hundred twenty-seven".