16712909 has 2 divisors, whose sum is σ = 16712910. Its totient is φ = 16712908.

The previous prime is 16712897. The next prime is 16712923. The reversal of 16712909 is 90921761.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16024009 + 688900 = 4003^2 + 830^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16712909 is a prime.

It is a Chen prime.

It is equal to p_1073978 and since 16712909 and 1073978 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16712929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8356454 + 8356455.

It is an arithmetic number, because the mean of its divisors is an integer number (8356455).

Almost surely, 2^16712909 is an apocalyptic number.

It is an amenable number.

16712909 is a deficient number, since it is larger than the sum of its proper divisors (1).

16712909 is an equidigital number, since it uses as much as digits as its factorization.

16712909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6804, while the sum is 35.

The square root of 16712909 is about 4088.1424877321. The cubic root of 16712909 is about 255.6724988900.

The spelling of 16712909 in words is "sixteen million, seven hundred twelve thousand, nine hundred nine".