16258009 has 4 divisors (see below), whose sum is σ = 16818660. Its totient is φ = 15697360.

The previous prime is 16258007. The next prime is 16258013. The reversal of 16258009 is 90085261.

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

It can be written as a sum of positive squares in 2 ways, for example, as 4112784 + 12145225 = 2028^2 + 3485^2 .

It is a cyclic number.

It is not a de Polignac number, because 16258009 - 2¹ = 16258007 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16258007) 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, 280282 + ... + 280339.

It is an arithmetic number, because the mean of its divisors is an integer number (4204665).

Almost surely, 2^16258009 is an apocalyptic number.

It is an amenable number.

16258009 is a deficient number, since it is larger than the sum of its proper divisors (560651).

16258009 is an equidigital number, since it uses as much as digits as its factorization.

16258009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 560650.

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 16258009 is about 4032.1221459673. The cubic root of 16258009 is about 253.3314563958.

The spelling of 16258009 in words is "sixteen million, two hundred fifty-eight thousand, nine".