16249109 has 8 divisors (see below), whose sum is σ = 17088192. Its totient is φ = 15421120.

The previous prime is 16249099. The next prime is 16249133. The reversal of 16249109 is 90194261.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16249109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16249609) 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, 317 + ... + 5709.

It is an arithmetic number, because the mean of its divisors is an integer number (2136024).

Almost surely, 2^16249109 is an apocalyptic number.

It is an amenable number.

16249109 is a deficient number, since it is larger than the sum of its proper divisors (839083).

16249109 is a wasteful number, since it uses less digits than its factorization.

16249109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5547.

The product of its (nonzero) digits is 3888, while the sum is 32.

The square root of 16249109 is about 4031.0183576858. The cubic root of 16249109 is about 253.2852215113.

The spelling of 16249109 in words is "sixteen million, two hundred forty-nine thousand, one hundred nine".