16356009 has 8 divisors (see below), whose sum is σ = 21918400. Its totient is φ = 10848816.

The previous prime is 16356001. The next prime is 16356037. The reversal of 16356009 is 90065361.

It is a happy number.

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

It is not a de Polignac number, because 16356009 - 2³ = 16356001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16356001) 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 7 ways as a sum of consecutive naturals, for example, 13102 + ... + 14295.

It is an arithmetic number, because the mean of its divisors is an integer number (2739800).

Almost surely, 2^16356009 is an apocalyptic number.

It is an amenable number.

16356009 is a deficient number, since it is larger than the sum of its proper divisors (5562391).

16356009 is a wasteful number, since it uses less digits than its factorization.

16356009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27599.

The product of its (nonzero) digits is 4860, while the sum is 30.

The square root of 16356009 is about 4044.2562975163. The cubic root of 16356009 is about 253.8394473823.

The spelling of 16356009 in words is "sixteen million, three hundred fifty-six thousand, nine".