16689129 has 8 divisors (see below), whose sum is σ = 22970112. Its totient is φ = 10767120.

The previous prime is 16689107. The next prime is 16689133. The reversal of 16689129 is 92198661.

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

It is not a de Polignac number, because 16689129 - 2⁸ = 16688873 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16689199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89634 + ... + 89819.

It is an arithmetic number, because the mean of its divisors is an integer number (2871264).

Almost surely, 2^16689129 is an apocalyptic number.

It is an amenable number.

16689129 is a deficient number, since it is larger than the sum of its proper divisors (6280983).

16689129 is a wasteful number, since it uses less digits than its factorization.

16689129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179487.

The product of its digits is 46656, while the sum is 42.

The square root of 16689129 is about 4085.2330410884. The cubic root of 16689129 is about 255.5511799363.

The spelling of 16689129 in words is "sixteen million, six hundred eighty-nine thousand, one hundred twenty-nine".