16716489 has 16 divisors (see below), whose sum is σ = 23215872. Its totient is φ = 10689408.

The previous prime is 16716481. The next prime is 16716541. The reversal of 16716489 is 98461761.

It is not a de Polignac number, because 16716489 - 2³ = 16716481 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16716489.

It is not an unprimeable number, because it can be changed into a prime (16716481) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7072 + ... + 9134.

It is an arithmetic number, because the mean of its divisors is an integer number (1450992).

Almost surely, 2^16716489 is an apocalyptic number.

It is an amenable number.

16716489 is a deficient number, since it is larger than the sum of its proper divisors (6499383).

16716489 is a wasteful number, since it uses less digits than its factorization.

16716489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2176.

The product of its digits is 72576, while the sum is 42.

The square root of 16716489 is about 4088.5803159532. The cubic root of 16716489 is about 255.6907530870.

It can be divided in two parts, 16716 and 489, that added together give a triangular number (17205 = T₁₈₅).

The spelling of 16716489 in words is "sixteen million, seven hundred sixteen thousand, four hundred eighty-nine".