16339993 has 2 divisors, whose sum is σ = 16339994. Its totient is φ = 16339992.

The previous prime is 16339987. The next prime is 16339997. The reversal of 16339993 is 39993361.

16339993 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12166144 + 4173849 = 3488^2 + 2043^2 .

It is a cyclic number.

It is not a de Polignac number, because 16339993 - 2⁹ = 16339481 is a prime.

It is not a weakly prime, because it can be changed into another prime (16339997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8169996 + 8169997.

It is an arithmetic number, because the mean of its divisors is an integer number (8169997).

Almost surely, 2^16339993 is an apocalyptic number.

It is an amenable number.

16339993 is a deficient number, since it is larger than the sum of its proper divisors (1).

16339993 is an equidigital number, since it uses as much as digits as its factorization.

16339993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 118098, while the sum is 43.

The square root of 16339993 is about 4042.2757204327. The cubic root of 16339993 is about 253.7565661142.

The spelling of 16339993 in words is "sixteen million, three hundred thirty-nine thousand, nine hundred ninety-three".