16494489 has 64 divisors (see below), whose sum is σ = 29184000. Its totient is φ = 9097920.

The previous prime is 16494481. The next prime is 16494521. The reversal of 16494489 is 98449461.

16494489 is a `hidden beast` number, since 164 + 9 + 4 + 489 = 666.

It is not a de Polignac number, because 16494489 - 2³ = 16494481 is a prime.

It is a super-2 number, since 2×16494489² = 544136334742242, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16494481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 208752 + ... + 208830.

It is an arithmetic number, because the mean of its divisors is an integer number (456000).

Almost surely, 2^16494489 is an apocalyptic number.

16494489 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

16494489 is a deficient number, since it is larger than the sum of its proper divisors (12689511).

16494489 is a wasteful number, since it uses less digits than its factorization.

16494489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155 (or 149 counting only the distinct ones).

The product of its digits is 248832, while the sum is 45.

The square root of 16494489 is about 4061.3407884589. The cubic root of 16494489 is about 254.5538218454.

The spelling of 16494489 in words is "sixteen million, four hundred ninety-four thousand, four hundred eighty-nine".