16395009 has 4 divisors (see below), whose sum is σ = 21860016. Its totient is φ = 10930004.

The previous prime is 16395007. The next prime is 16395019. The reversal of 16395009 is 90059361.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 16395009 - 2¹ = 16395007 is a prime.

It is a super-2 number, since 2×16395009² = 537592640220162, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16395007) 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, 2732499 + ... + 2732504.

It is an arithmetic number, because the mean of its divisors is an integer number (5465004).

Almost surely, 2^16395009 is an apocalyptic number.

It is an amenable number.

16395009 is a deficient number, since it is larger than the sum of its proper divisors (5465007).

16395009 is an equidigital number, since it uses as much as digits as its factorization.

16395009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5465006.

The product of its (nonzero) digits is 7290, while the sum is 33.

The square root of 16395009 is about 4049.0750795706. The cubic root of 16395009 is about 254.0410426165.

The spelling of 16395009 in words is "sixteen million, three hundred ninety-five thousand, nine".