16729213 has 2 divisors, whose sum is σ = 16729214. Its totient is φ = 16729212.

The previous prime is 16729199. The next prime is 16729261. The reversal of 16729213 is 31292761.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14577124 + 2152089 = 3818^2 + 1467^2 .

It is an emirp because it is prime and its reverse (31292761) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16729213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16729313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8364606 + 8364607.

It is an arithmetic number, because the mean of its divisors is an integer number (8364607).

Almost surely, 2^16729213 is an apocalyptic number.

It is an amenable number.

16729213 is a deficient number, since it is larger than the sum of its proper divisors (1).

16729213 is an equidigital number, since it uses as much as digits as its factorization.

16729213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4536, while the sum is 31.

The square root of 16729213 is about 4090.1360613065. The cubic root of 16729213 is about 255.7556108856.

The spelling of 16729213 in words is "sixteen million, seven hundred twenty-nine thousand, two hundred thirteen".