16239317 has 4 divisors (see below), whose sum is σ = 16251456. Its totient is φ = 16227180.

The previous prime is 16239313. The next prime is 16239323. The reversal of 16239317 is 71393261.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 71393261 = 97 ⋅736013.

It is a cyclic number.

It is not a de Polignac number, because 16239317 - 2² = 16239313 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 (16239313) 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, 3773 + ... + 6834.

It is an arithmetic number, because the mean of its divisors is an integer number (4062864).

Almost surely, 2^16239317 is an apocalyptic number.

It is an amenable number.

16239317 is a deficient number, since it is larger than the sum of its proper divisors (12139).

16239317 is a wasteful number, since it uses less digits than its factorization.

16239317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12138.

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

The square root of 16239317 is about 4029.8035932288. The cubic root of 16239317 is about 253.2343332389.

The spelling of 16239317 in words is "sixteen million, two hundred thirty-nine thousand, three hundred seventeen".