16879917 has 8 divisors (see below), whose sum is σ = 22931424. Its totient is φ = 11040848.

The previous prime is 16879901. The next prime is 16879931. The reversal of 16879917 is 71997861.

Added to its reverse (71997861) it gives a triangular number (88877778 = T₁₃₃₃₂).

It is a happy number.

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 16879917 - 2⁴ = 16879901 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16879937) 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, 52923 + ... + 53240.

It is an arithmetic number, because the mean of its divisors is an integer number (2866428).

Almost surely, 2^16879917 is an apocalyptic number.

It is an amenable number.

16879917 is a deficient number, since it is larger than the sum of its proper divisors (6051507).

16879917 is a wasteful number, since it uses less digits than its factorization.

16879917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106219.

The product of its digits is 190512, while the sum is 48.

The square root of 16879917 is about 4108.5176158805. The cubic root of 16879917 is about 256.5213020318.

Adding to 16879917 its reverse (71997861), we get a triangular number (88877778 = T₁₃₃₃₂).

The spelling of 16879917 in words is "sixteen million, eight hundred seventy-nine thousand, nine hundred seventeen".