16219899 has 16 divisors (see below), whose sum is σ = 25075200. Its totient is φ = 10342728.

The previous prime is 16219891. The next prime is 16219927. The reversal of 16219899 is 99891261.

It is not a de Polignac number, because 16219899 - 2³ = 16219891 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16219891) 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, 12439 + ... + 13680.

It is an arithmetic number, because the mean of its divisors is an integer number (1567200).

Almost surely, 2^16219899 is an apocalyptic number.

16219899 is a deficient number, since it is larger than the sum of its proper divisors (8855301).

16219899 is a wasteful number, since it uses less digits than its factorization.

16219899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26151 (or 26145 counting only the distinct ones).

The product of its digits is 69984, while the sum is 45.

The square root of 16219899 is about 4027.3935740129. The cubic root of 16219899 is about 253.1333588461.

The spelling of 16219899 in words is "sixteen million, two hundred nineteen thousand, eight hundred ninety-nine".