16317449 has 4 divisors (see below), whose sum is σ = 16329936. Its totient is φ = 16304964.

The previous prime is 16317443. The next prime is 16317473. The reversal of 16317449 is 94471361.

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 16317449 - 2⁸ = 16317193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16317443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4019 + ... + 6984.

It is an arithmetic number, because the mean of its divisors is an integer number (4082484).

Almost surely, 2^16317449 is an apocalyptic number.

It is an amenable number.

16317449 is a deficient number, since it is larger than the sum of its proper divisors (12487).

16317449 is a wasteful number, since it uses less digits than its factorization.

16317449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12486.

The product of its digits is 18144, while the sum is 35.

The square root of 16317449 is about 4039.4862297079. The cubic root of 16317449 is about 253.6398112507.

The spelling of 16317449 in words is "sixteen million, three hundred seventeen thousand, four hundred forty-nine".