16217349 has 4 divisors (see below), whose sum is σ = 21623136. Its totient is φ = 10811564.

The previous prime is 16217339. The next prime is 16217381. The reversal of 16217349 is 94371261.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 16217349 - 2¹¹ = 16215301 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16217329) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2702889 + ... + 2702894.

It is an arithmetic number, because the mean of its divisors is an integer number (5405784).

Almost surely, 2^16217349 is an apocalyptic number.

It is an amenable number.

16217349 is a deficient number, since it is larger than the sum of its proper divisors (5405787).

16217349 is an equidigital number, since it uses as much as digits as its factorization.

16217349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5405786.

The product of its digits is 9072, while the sum is 33.

The square root of 16217349 is about 4027.0769796467. The cubic root of 16217349 is about 253.1200927566.

The spelling of 16217349 in words is "sixteen million, two hundred seventeen thousand, three hundred forty-nine".