16259009 has 8 divisors (see below), whose sum is σ = 17554152. Its totient is φ = 14970240.

The previous prime is 16258997. The next prime is 16259011. The reversal of 16259009 is 90095261.

16259009 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 2958400 + 13300609 = 1720^2 + 3647^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 16259009 - 2¹⁶ = 16193473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16259099) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4637 + ... + 7349.

It is an arithmetic number, because the mean of its divisors is an integer number (2194269).

Almost surely, 2^16259009 is an apocalyptic number.

It is an amenable number.

16259009 is a deficient number, since it is larger than the sum of its proper divisors (1295143).

16259009 is a wasteful number, since it uses less digits than its factorization.

16259009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3187.

The product of its (nonzero) digits is 4860, while the sum is 32.

The square root of 16259009 is about 4032.2461482405. The cubic root of 16259009 is about 253.3366502721.

The spelling of 16259009 in words is "sixteen million, two hundred fifty-nine thousand, nine".