16969913 has 2 divisors, whose sum is σ = 16969914. Its totient is φ = 16969912.

The previous prime is 16969903. The next prime is 16969933. The reversal of 16969913 is 31996961.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16875664 + 94249 = 4108^2 + 307^2 .

It is an emirp because it is prime and its reverse (31996961) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16969913 - 2²⁴ = 192697 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (16969903) 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 as a sum of consecutive naturals, namely, 8484956 + 8484957.

It is an arithmetic number, because the mean of its divisors is an integer number (8484957).

Almost surely, 2^16969913 is an apocalyptic number.

It is an amenable number.

16969913 is a deficient number, since it is larger than the sum of its proper divisors (1).

16969913 is an equidigital number, since it uses as much as digits as its factorization.

16969913 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 78732, while the sum is 44.

The square root of 16969913 is about 4119.4554251745. The cubic root of 16969913 is about 256.9763790006.

The spelling of 16969913 in words is "sixteen million, nine hundred sixty-nine thousand, nine hundred thirteen".