16923229 has 4 divisors (see below), whose sum is σ = 16931484. Its totient is φ = 16914976.

The previous prime is 16923223. The next prime is 16923233. The reversal of 16923229 is 92232961.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 4687225 + 12236004 = 2165^2 + 3498^2 .

It is a cyclic number.

It is not a de Polignac number, because 16923229 - 2¹³ = 16915037 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16923194 and 16923203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16923223) 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, 1569 + ... + 6025.

It is an arithmetic number, because the mean of its divisors is an integer number (4232871).

Almost surely, 2^16923229 is an apocalyptic number.

It is an amenable number.

16923229 is a deficient number, since it is larger than the sum of its proper divisors (8255).

16923229 is an equidigital number, since it uses as much as digits as its factorization.

16923229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8254.

The product of its digits is 11664, while the sum is 34.

The square root of 16923229 is about 4113.7852398977. The cubic root of 16923229 is about 256.7405164080.

The spelling of 16923229 in words is "sixteen million, nine hundred twenty-three thousand, two hundred twenty-nine".