16912889 has 24 divisors (see below), whose sum is σ = 21067200. Its totient is φ = 13505184.

The previous prime is 16912853. The next prime is 16912919. The reversal of 16912889 is 98821961.

It is not a de Polignac number, because 16912889 - 2²⁰ = 15864313 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16912289) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 48287 + ... + 48635.

It is an arithmetic number, because the mean of its divisors is an integer number (877800).

Almost surely, 2^16912889 is an apocalyptic number.

It is an amenable number.

16912889 is a deficient number, since it is larger than the sum of its proper divisors (4154311).

16912889 is a wasteful number, since it uses less digits than its factorization.

16912889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 429 (or 422 counting only the distinct ones).

The product of its digits is 62208, while the sum is 44.

The square root of 16912889 is about 4112.5282977750. The cubic root of 16912889 is about 256.6882167397.

The spelling of 16912889 in words is "sixteen million, nine hundred twelve thousand, eight hundred eighty-nine".