17117923 has 4 divisors (see below), whose sum is σ = 17129728. Its totient is φ = 17106120.

The previous prime is 17117909. The next prime is 17117953. The reversal of 17117923 is 32971171.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32971171 = 61 ⋅540511.

It is a cyclic number.

It is not a de Polignac number, because 17117923 - 2⁹ = 17117411 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (17117953) 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, 3363 + ... + 6748.

It is an arithmetic number, because the mean of its divisors is an integer number (4282432).

Almost surely, 2^17117923 is an apocalyptic number.

17117923 is a deficient number, since it is larger than the sum of its proper divisors (11805).

17117923 is a wasteful number, since it uses less digits than its factorization.

17117923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11804.

The product of its digits is 2646, while the sum is 31.

The square root of 17117923 is about 4137.3811765415. The cubic root of 17117923 is about 257.7213254070.

The spelling of 17117923 in words is "seventeen million, one hundred seventeen thousand, nine hundred twenty-three".