16897799 has 2 divisors, whose sum is σ = 16897800. Its totient is φ = 16897798.

The previous prime is 16897747. The next prime is 16897817. The reversal of 16897799 is 99779861.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16897799 is a prime.

It is a super-2 number, since 2×16897799² = 571071222088802, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16897399) 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, 8448899 + 8448900.

It is an arithmetic number, because the mean of its divisors is an integer number (8448900).

Almost surely, 2^16897799 is an apocalyptic number.

16897799 is a deficient number, since it is larger than the sum of its proper divisors (1).

16897799 is an equidigital number, since it uses as much as digits as its factorization.

16897799 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 16897799 is about 4110.6932505357. The cubic root of 16897799 is about 256.6118533275.

The spelling of 16897799 in words is "sixteen million, eight hundred ninety-seven thousand, seven hundred ninety-nine".