16969789 has 4 divisors (see below), whose sum is σ = 16985340. Its totient is φ = 16954240.

The previous prime is 16969787. The next prime is 16969801. The reversal of 16969789 is 98796961.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 13264164 + 3705625 = 3642^2 + 1925^2 .

It is a cyclic number.

It is not a de Polignac number, because 16969789 - 2¹ = 16969787 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 (16969783) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6004 + ... + 8365.

It is an arithmetic number, because the mean of its divisors is an integer number (4246335).

Almost surely, 2^16969789 is an apocalyptic number.

It is an amenable number.

16969789 is a deficient number, since it is larger than the sum of its proper divisors (15551).

16969789 is a wasteful number, since it uses less digits than its factorization.

16969789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15550.

The product of its digits is 1469664, while the sum is 55.

The square root of 16969789 is about 4119.4403746140. The cubic root of 16969789 is about 256.9757530860.

The spelling of 16969789 in words is "sixteen million, nine hundred sixty-nine thousand, seven hundred eighty-nine".