16117409 has 8 divisors (see below), whose sum is σ = 20094528. Its totient is φ = 12558960.

The previous prime is 16117397. The next prime is 16117421. The reversal of 16117409 is 90471161.

It is an interprime number because it is at equal distance from previous prime (16117397) and next prime (16117421).

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-16117409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16117499) 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, 104582 + ... + 104735.

It is an arithmetic number, because the mean of its divisors is an integer number (2511816).

Almost surely, 2^16117409 is an apocalyptic number.

It is an amenable number.

16117409 is a deficient number, since it is larger than the sum of its proper divisors (3977119).

16117409 is a wasteful number, since it uses less digits than its factorization.

16117409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209335.

The product of its (nonzero) digits is 1512, while the sum is 29.

The square root of 16117409 is about 4014.6492997521. The cubic root of 16117409 is about 252.5990670964.

The spelling of 16117409 in words is "sixteen million, one hundred seventeen thousand, four hundred nine".