16864923 has 6 divisors (see below), whose sum is σ = 22496052. Its totient is φ = 11238540.

The previous prime is 16864909. The next prime is 16864927. The reversal of 16864923 is 32946861.

It is not a de Polignac number, because 16864923 - 2⁴ = 16864907 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16864927) 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 5 ways as a sum of consecutive naturals, for example, 5928 + ... + 8298.

It is an arithmetic number, because the mean of its divisors is an integer number (3749342).

Almost surely, 2^16864923 is an apocalyptic number.

16864923 is a deficient number, since it is larger than the sum of its proper divisors (5631129).

16864923 is an frugal number, since it uses more digits than its factorization.

16864923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4745 (or 2374 counting only the distinct ones).

The product of its digits is 62208, while the sum is 39.

The square root of 16864923 is about 4106.6924647458. The cubic root of 16864923 is about 256.4453257535.

Multiplying 16864923 by its product of digits (62208), we get a square (1049133129984 = 1024272²).

The spelling of 16864923 in words is "sixteen million, eight hundred sixty-four thousand, nine hundred twenty-three".