16989129 has 32 divisors (see below), whose sum is σ = 26208000. Its totient is φ = 10869120.

The previous prime is 16989113. The next prime is 16989143. The reversal of 16989129 is 92198961.

It is not a de Polignac number, because 16989129 - 2⁴ = 16989113 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16989149) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 113947 + ... + 114095.

It is an arithmetic number, because the mean of its divisors is an integer number (819000).

Almost surely, 2^16989129 is an apocalyptic number.

It is an amenable number.

16989129 is a deficient number, since it is larger than the sum of its proper divisors (9218871).

16989129 is a wasteful number, since it uses less digits than its factorization.

16989129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302 (or 296 counting only the distinct ones).

The product of its digits is 69984, while the sum is 45.

The square root of 16989129 is about 4121.7871124065. The cubic root of 16989129 is about 257.0733387471.

It can be divided in two parts, 169 and 89129, that added together give a palindrome (89298).

The spelling of 16989129 in words is "sixteen million, nine hundred eighty-nine thousand, one hundred twenty-nine".