16803923 has 4 divisors (see below), whose sum is σ = 17688360. Its totient is φ = 15919488.

The previous prime is 16803901. The next prime is 16803929. The reversal of 16803923 is 32930861.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32930861 = 53 ⋅621337.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16803923 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16803923.

It is not an unprimeable number, because it can be changed into a prime (16803929) 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, 442190 + ... + 442227.

It is an arithmetic number, because the mean of its divisors is an integer number (4422090).

Almost surely, 2^16803923 is an apocalyptic number.

16803923 is a deficient number, since it is larger than the sum of its proper divisors (884437).

16803923 is an equidigital number, since it uses as much as digits as its factorization.

16803923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 884436.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 16803923 is about 4099.2588354482. The cubic root of 16803923 is about 256.1357668113.

The spelling of 16803923 in words is "sixteen million, eight hundred three thousand, nine hundred twenty-three".