16779899 has 2 divisors, whose sum is σ = 16779900. Its totient is φ = 16779898.

The previous prime is 16779881. The next prime is 16779911. The reversal of 16779899 is 99897761.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 16779899 - 2²⁴ = 2683 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (16779809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8389949 + 8389950.

It is an arithmetic number, because the mean of its divisors is an integer number (8389950).

Almost surely, 2^16779899 is an apocalyptic number.

16779899 is a deficient number, since it is larger than the sum of its proper divisors (1).

16779899 is an equidigital number, since it uses as much as digits as its factorization.

16779899 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1714608, while the sum is 56.

The square root of 16779899 is about 4096.3275015555. The cubic root of 16779899 is about 256.0136457163.

The spelling of 16779899 in words is "sixteen million, seven hundred seventy-nine thousand, eight hundred ninety-nine".