16338997 has 2 divisors, whose sum is σ = 16338998. Its totient is φ = 16338996.

The previous prime is 16338979. The next prime is 16339003. The reversal of 16338997 is 79983361.

16338997 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Together with previous prime (16338979) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16208676 + 130321 = 4026^2 + 361^2 .

It is an emirp because it is prime and its reverse (79983361) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16338997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16338967) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8169498 + 8169499.

It is an arithmetic number, because the mean of its divisors is an integer number (8169499).

Almost surely, 2^16338997 is an apocalyptic number.

It is an amenable number.

16338997 is a deficient number, since it is larger than the sum of its proper divisors (1).

16338997 is an equidigital number, since it uses as much as digits as its factorization.

16338997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 244944, while the sum is 46.

The square root of 16338997 is about 4042.1525206256. The cubic root of 16338997 is about 253.7514101210.

The spelling of 16338997 in words is "sixteen million, three hundred thirty-eight thousand, nine hundred ninety-seven".