16409923 has 4 divisors (see below), whose sum is σ = 16528120. Its totient is φ = 16291728.

The previous prime is 16409893. The next prime is 16409929. The reversal of 16409923 is 32990461.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 16409923 - 2⁵ = 16409891 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (16409929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58890 + ... + 59167.

It is an arithmetic number, because the mean of its divisors is an integer number (4132030).

Almost surely, 2^16409923 is an apocalyptic number.

16409923 is a deficient number, since it is larger than the sum of its proper divisors (118197).

16409923 is a wasteful number, since it uses less digits than its factorization.

16409923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118196.

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

The square root of 16409923 is about 4050.9163160944. The cubic root of 16409923 is about 254.1180501955.

The spelling of 16409923 in words is "sixteen million, four hundred nine thousand, nine hundred twenty-three".