16291117 has 8 divisors (see below), whose sum is σ = 17508096. Its totient is φ = 15102912.

The previous prime is 16291091. The next prime is 16291123. The reversal of 16291117 is 71119261.

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 16291117 - 2¹⁵ = 16258349 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16291147) 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 7 ways as a sum of consecutive naturals, for example, 6013 + ... + 8290.

It is an arithmetic number, because the mean of its divisors is an integer number (2188512).

Almost surely, 2^16291117 is an apocalyptic number.

16291117 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

16291117 is a deficient number, since it is larger than the sum of its proper divisors (1216979).

16291117 is a wasteful number, since it uses less digits than its factorization.

16291117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14387.

The product of its digits is 756, while the sum is 28.

The square root of 16291117 is about 4036.2255883436. The cubic root of 16291117 is about 253.5033021808.

The spelling of 16291117 in words is "sixteen million, two hundred ninety-one thousand, one hundred seventeen".