16211417 has 2 divisors, whose sum is σ = 16211418. Its totient is φ = 16211416.

The previous prime is 16211411. The next prime is 16211449. The reversal of 16211417 is 71411261.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14295961 + 1915456 = 3781^2 + 1384^2 .

It is a cyclic number.

It is not a de Polignac number, because 16211417 - 2⁴ = 16211401 is a prime.

It is a super-2 number, since 2×16211417² = 525620082295778, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 16211392 and 16211401.

It is not a weakly prime, because it can be changed into another prime (16211411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8105708 + 8105709.

It is an arithmetic number, because the mean of its divisors is an integer number (8105709).

Almost surely, 2^16211417 is an apocalyptic number.

It is an amenable number.

16211417 is a deficient number, since it is larger than the sum of its proper divisors (1).

16211417 is an equidigital number, since it uses as much as digits as its factorization.

16211417 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 336, while the sum is 23.

The square root of 16211417 is about 4026.3403979296. The cubic root of 16211417 is about 253.0892268096.

Adding to 16211417 its reverse (71411261), we get a palindrome (87622678).

The spelling of 16211417 in words is "sixteen million, two hundred eleven thousand, four hundred seventeen".