16123399 has 2 divisors, whose sum is σ = 16123400. Its totient is φ = 16123398.

The previous prime is 16123357. The next prime is 16123403. The reversal of 16123399 is 99332161.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 16123399 - 2⁷ = 16123271 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16123099) 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, 8061699 + 8061700.

It is an arithmetic number, because the mean of its divisors is an integer number (8061700).

Almost surely, 2^16123399 is an apocalyptic number.

16123399 is a deficient number, since it is larger than the sum of its proper divisors (1).

16123399 is an equidigital number, since it uses as much as digits as its factorization.

16123399 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8748, while the sum is 34.

The square root of 16123399 is about 4015.3952482913. The cubic root of 16123399 is about 252.6303558519.

The spelling of 16123399 in words is "sixteen million, one hundred twenty-three thousand, three hundred ninety-nine".