16989429 has 8 divisors (see below), whose sum is σ = 23179552. Its totient is φ = 11062800.

The previous prime is 16989421. The next prime is 16989461. The reversal of 16989429 is 92498961.

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

It is not a de Polignac number, because 16989429 - 2³ = 16989421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16989421) 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 7 ways as a sum of consecutive naturals, for example, 65722 + ... + 65979.

It is an arithmetic number, because the mean of its divisors is an integer number (2897444).

Almost surely, 2^16989429 is an apocalyptic number.

It is an amenable number.

16989429 is a deficient number, since it is larger than the sum of its proper divisors (6190123).

16989429 is a wasteful number, since it uses less digits than its factorization.

16989429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131747.

The product of its digits is 279936, while the sum is 48.

The square root of 16989429 is about 4121.8235042272. The cubic root of 16989429 is about 257.0748519020.

It can be divided in two parts, 169 and 89429, that added together give a palindrome (89598).

The spelling of 16989429 in words is "sixteen million, nine hundred eighty-nine thousand, four hundred twenty-nine".