16912969 has 4 divisors (see below), whose sum is σ = 16927380. Its totient is φ = 16898560.

The previous prime is 16912967. The next prime is 16912991. The reversal of 16912969 is 96921961.

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 7912969 + 9000000 = 2813^2 + 3000^2 .

It is a cyclic number.

It is not a de Polignac number, because 16912969 - 2¹ = 16912967 is a prime.

It is a super-2 number, since 2×16912969² = 572097040789922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16912963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5272 + ... + 7849.

It is an arithmetic number, because the mean of its divisors is an integer number (4231845).

Almost surely, 2^16912969 is an apocalyptic number.

It is an amenable number.

16912969 is a deficient number, since it is larger than the sum of its proper divisors (14411).

16912969 is a wasteful number, since it uses less digits than its factorization.

16912969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14410.

The product of its digits is 52488, while the sum is 43.

The square root of 16912969 is about 4112.5380241403. The cubic root of 16912969 is about 256.6886214611.

The spelling of 16912969 in words is "sixteen million, nine hundred twelve thousand, nine hundred sixty-nine".