16965139 has 2 divisors, whose sum is σ = 16965140. Its totient is φ = 16965138.

The previous prime is 16965131. The next prime is 16965149. The reversal of 16965139 is 93156961.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16965139 - 2³ = 16965131 is a prime.

It is not a weakly prime, because it can be changed into another prime (16965131) 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, 8482569 + 8482570.

It is an arithmetic number, because the mean of its divisors is an integer number (8482570).

Almost surely, 2^16965139 is an apocalyptic number.

16965139 is a deficient number, since it is larger than the sum of its proper divisors (1).

16965139 is an equidigital number, since it uses as much as digits as its factorization.

16965139 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 43740, while the sum is 40.

The square root of 16965139 is about 4118.8759388940. The cubic root of 16965139 is about 256.9522790874.

The spelling of 16965139 in words is "sixteen million, nine hundred sixty-five thousand, one hundred thirty-nine".