16297399 has 2 divisors, whose sum is σ = 16297400. Its totient is φ = 16297398.

The previous prime is 16297367. The next prime is 16297433. The reversal of 16297399 is 99379261.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16297399 - 2⁵ = 16297367 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16297319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8148699 + 8148700.

It is an arithmetic number, because the mean of its divisors is an integer number (8148700).

Almost surely, 2^16297399 is an apocalyptic number.

16297399 is a deficient number, since it is larger than the sum of its proper divisors (1).

16297399 is an equidigital number, since it uses as much as digits as its factorization.

16297399 is an evil number, because the sum of its binary digits is even.

The product of its digits is 183708, while the sum is 46.

The square root of 16297399 is about 4037.0037156287. The cubic root of 16297399 is about 253.5358823715.

The spelling of 16297399 in words is "sixteen million, two hundred ninety-seven thousand, three hundred ninety-nine".