16393117 has 8 divisors (see below), whose sum is σ = 18692856. Its totient is φ = 14241792.

The previous prime is 16393093. The next prime is 16393127. The reversal of 16393117 is 71139361.

It can be written as a sum of positive squares in 4 ways, for example, as 1229881 + 15163236 = 1109^2 + 3894^2 .

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 16393117 - 2¹¹ = 16391069 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16393127) 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, 36868 + ... + 37309.

It is an arithmetic number, because the mean of its divisors is an integer number (2336607).

Almost surely, 2^16393117 is an apocalyptic number.

16393117 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

16393117 is a deficient number, since it is larger than the sum of its proper divisors (2299739).

16393117 is a wasteful number, since it uses less digits than its factorization.

16393117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74207.

The product of its digits is 3402, while the sum is 31.

The square root of 16393117 is about 4048.8414392268. The cubic root of 16393117 is about 254.0312700461.

The spelling of 16393117 in words is "sixteen million, three hundred ninety-three thousand, one hundred seventeen".