16388297 has 2 divisors, whose sum is σ = 16388298. Its totient is φ = 16388296.

The previous prime is 16388263. The next prime is 16388311. The reversal of 16388297 is 79288361.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12243001 + 4145296 = 3499^2 + 2036^2 .

It is a cyclic number.

It is not a de Polignac number, because 16388297 - 2¹⁴ = 16371913 is a prime.

It is not a weakly prime, because it can be changed into another prime (16388237) 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, 8194148 + 8194149.

It is an arithmetic number, because the mean of its divisors is an integer number (8194149).

Almost surely, 2^16388297 is an apocalyptic number.

It is an amenable number.

16388297 is a deficient number, since it is larger than the sum of its proper divisors (1).

16388297 is an equidigital number, since it uses as much as digits as its factorization.

16388297 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 145152, while the sum is 44.

The square root of 16388297 is about 4048.2461634639. The cubic root of 16388297 is about 254.0063703530.

The spelling of 16388297 in words is "sixteen million, three hundred eighty-eight thousand, two hundred ninety-seven".