16199317 has 6 divisors (see below), whose sum is σ = 17208578. Its totient is φ = 15246144.

The previous prime is 16199311. The next prime is 16199333. The reversal of 16199317 is 71399161.

It can be written as a sum of positive squares in 3 ways, for example, as 9979281 + 6220036 = 3159^2 + 2494^2 .

It is not a de Polignac number, because 16199317 - 2⁷ = 16199189 is a prime.

It is a super-3 number, since 3×16199317³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16199311) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 27738 + ... + 28315.

Almost surely, 2^16199317 is an apocalyptic number.

16199317 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

16199317 is a deficient number, since it is larger than the sum of its proper divisors (1009261).

16199317 is an equidigital number, since it uses as much as digits as its factorization.

16199317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56087 (or 56070 counting only the distinct ones).

The product of its digits is 10206, while the sum is 37.

The square root of 16199317 is about 4024.8375122482. The cubic root of 16199317 is about 253.0262435868.

The spelling of 16199317 in words is "sixteen million, one hundred ninety-nine thousand, three hundred seventeen".