16227709 has 2 divisors, whose sum is σ = 16227710. Its totient is φ = 16227708.

The previous prime is 16227697. The next prime is 16227721. The reversal of 16227709 is 90772261.

It is a balanced prime because it is at equal distance from previous prime (16227697) and next prime (16227721).

It can be written as a sum of positive squares in only one way, i.e., 15824484 + 403225 = 3978^2 + 635^2 .

It is a cyclic number.

It is not a de Polignac number, because 16227709 - 2¹³ = 16219517 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16227749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8113854 + 8113855.

It is an arithmetic number, because the mean of its divisors is an integer number (8113855).

Almost surely, 2^16227709 is an apocalyptic number.

It is an amenable number.

16227709 is a deficient number, since it is larger than the sum of its proper divisors (1).

16227709 is an equidigital number, since it uses as much as digits as its factorization.

16227709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10584, while the sum is 34.

The square root of 16227709 is about 4028.3630670534. The cubic root of 16227709 is about 253.1739808480.

The spelling of 16227709 in words is "sixteen million, two hundred twenty-seven thousand, seven hundred nine".