16988929 has 2 divisors, whose sum is σ = 16988930. Its totient is φ = 16988928.

The previous prime is 16988921. The next prime is 16988941. The reversal of 16988929 is 92988961.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16810000 + 178929 = 4100^2 + 423^2 .

It is a cyclic number.

It is not a de Polignac number, because 16988929 - 2³ = 16988921 is a prime.

It is not a weakly prime, because it can be changed into another prime (16988921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8494464 + 8494465.

It is an arithmetic number, because the mean of its divisors is an integer number (8494465).

Almost surely, 2^16988929 is an apocalyptic number.

It is an amenable number.

16988929 is a deficient number, since it is larger than the sum of its proper divisors (1).

16988929 is an equidigital number, since it uses as much as digits as its factorization.

16988929 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 559872, while the sum is 52.

The square root of 16988929 is about 4121.7628510141. The cubic root of 16988929 is about 257.0723299673.

It can be divided in two parts, 169 and 88929, that added together give a palindrome (89098).

The spelling of 16988929 in words is "sixteen million, nine hundred eighty-eight thousand, nine hundred twenty-nine".