16923317 has 4 divisors (see below), whose sum is σ = 16935456. Its totient is φ = 16911180.

The previous prime is 16923293. The next prime is 16923323. The reversal of 16923317 is 71332961.

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.

It is a cyclic number.

It is not a de Polignac number, because 16923317 - 2⁶ = 16923253 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 (16923367) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3659 + ... + 6872.

It is an arithmetic number, because the mean of its divisors is an integer number (4233864).

Almost surely, 2^16923317 is an apocalyptic number.

It is an amenable number.

16923317 is a deficient number, since it is larger than the sum of its proper divisors (12139).

16923317 is a wasteful number, since it uses less digits than its factorization.

16923317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12138.

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

The square root of 16923317 is about 4113.7959356293. The cubic root of 16923317 is about 256.7409614202.

The spelling of 16923317 in words is "sixteen million, nine hundred twenty-three thousand, three hundred seventeen".