16869729 has 16 divisors (see below), whose sum is σ = 24176448. Its totient is φ = 10424832.

The previous prime is 16869719. The next prime is 16869731. The reversal of 16869729 is 92796861.

It is not a de Polignac number, because 16869729 - 2¹² = 16865633 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16869709) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 949 + ... + 5885.

It is an arithmetic number, because the mean of its divisors is an integer number (1511028).

Almost surely, 2^16869729 is an apocalyptic number.

It is an amenable number.

16869729 is a deficient number, since it is larger than the sum of its proper divisors (7306719).

16869729 is a wasteful number, since it uses less digits than its factorization.

16869729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5024.

The product of its digits is 326592, while the sum is 48.

The square root of 16869729 is about 4107.2775654927. The cubic root of 16869729 is about 256.4696831961.

The spelling of 16869729 in words is "sixteen million, eight hundred sixty-nine thousand, seven hundred twenty-nine".