16489899 has 10 divisors (see below), whose sum is σ = 24633180. Its totient is φ = 10993212.

The previous prime is 16489883. The next prime is 16489927. The reversal of 16489899 is 99898461.

It is not a de Polignac number, because 16489899 - 2⁴ = 16489883 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16489819) 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 9 ways as a sum of consecutive naturals, for example, 101709 + ... + 101870.

It is an arithmetic number, because the mean of its divisors is an integer number (2463318).

Almost surely, 2^16489899 is an apocalyptic number.

16489899 is a deficient number, since it is larger than the sum of its proper divisors (8143281).

16489899 is an equidigital number, since it uses as much as digits as its factorization.

16489899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203591 (or 203582 counting only the distinct ones).

The product of its digits is 1119744, while the sum is 54.

The square root of 16489899 is about 4060.7756648207. The cubic root of 16489899 is about 254.5302076868.

The spelling of 16489899 in words is "sixteen million, four hundred eighty-nine thousand, eight hundred ninety-nine".