16317239 has 4 divisors (see below), whose sum is σ = 16376424. Its totient is φ = 16258056.

The previous prime is 16317233. The next prime is 16317251. The reversal of 16317239 is 93271361.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16317239 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16317233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29177 + ... + 29730.

It is an arithmetic number, because the mean of its divisors is an integer number (4094106).

Almost surely, 2^16317239 is an apocalyptic number.

16317239 is a deficient number, since it is larger than the sum of its proper divisors (59185).

16317239 is an equidigital number, since it uses as much as digits as its factorization.

16317239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59184.

The product of its digits is 6804, while the sum is 32.

The square root of 16317239 is about 4039.4602362197. The cubic root of 16317239 is about 253.6387231601.

The spelling of 16317239 in words is "sixteen million, three hundred seventeen thousand, two hundred thirty-nine".