16289939 has 2 divisors, whose sum is σ = 16289940. Its totient is φ = 16289938.

The previous prime is 16289929. The next prime is 16289947. The reversal of 16289939 is 93998261.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16289939 is a prime.

It is a super-2 number, since 2×16289939² = 530724225247442, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 16289893 and 16289902.

It is not a weakly prime, because it can be changed into another prime (16289929) 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, 8144969 + 8144970.

It is an arithmetic number, because the mean of its divisors is an integer number (8144970).

Almost surely, 2^16289939 is an apocalyptic number.

16289939 is a deficient number, since it is larger than the sum of its proper divisors (1).

16289939 is an equidigital number, since it uses as much as digits as its factorization.

16289939 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 209952, while the sum is 47.

The square root of 16289939 is about 4036.0796572912. The cubic root of 16289939 is about 253.4971918143.

The spelling of 16289939 in words is "sixteen million, two hundred eighty-nine thousand, nine hundred thirty-nine".