16409906 has 8 divisors (see below), whose sum is σ = 25032240. Its totient is φ = 8065828.

The previous prime is 16409893. The next prime is 16409929. The reversal of 16409906 is 60990461.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a nialpdrome in base 16.

It is an unprimeable number.

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, 69416 + ... + 69651.

It is an arithmetic number, because the mean of its divisors is an integer number (3129030).

Almost surely, 2^16409906 is an apocalyptic number.

16409906 is a deficient number, since it is larger than the sum of its proper divisors (8622334).

16409906 is a wasteful number, since it uses less digits than its factorization.

16409906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139128.

The product of its (nonzero) digits is 11664, while the sum is 35.

The square root of 16409906 is about 4050.9142178032. The cubic root of 16409906 is about 254.1179624435.

The spelling of 16409906 in words is "sixteen million, four hundred nine thousand, nine hundred six".