16927969 has 4 divisors (see below), whose sum is σ = 16953796. Its totient is φ = 16902144.

The previous prime is 16927961. The next prime is 16927973. The reversal of 16927969 is 96972961.

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

It can be written as a sum of positive squares in 2 ways, for example, as 7398400 + 9529569 = 2720^2 + 3087^2 .

It is a cyclic number.

It is not a de Polignac number, because 16927969 - 2³ = 16927961 is a prime.

It is a super-2 number, since 2×16927969² = 573112268929922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16927961) 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, 11904 + ... + 13249.

It is an arithmetic number, because the mean of its divisors is an integer number (4238449).

Almost surely, 2^16927969 is an apocalyptic number.

It is an amenable number.

16927969 is a deficient number, since it is larger than the sum of its proper divisors (25827).

16927969 is an equidigital number, since it uses as much as digits as its factorization.

16927969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25826.

The product of its digits is 367416, while the sum is 49.

The square root of 16927969 is about 4114.3613113094. The cubic root of 16927969 is about 256.7644841833.

The spelling of 16927969 in words is "sixteen million, nine hundred twenty-seven thousand, nine hundred sixty-nine".