16227899 has 4 divisors (see below), whose sum is σ = 16605336. Its totient is φ = 15850464.

The previous prime is 16227859. The next prime is 16227901. The reversal of 16227899 is 99872261.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99872261 = 1231 ⋅81131.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16227899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16227839) 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 3 ways as a sum of consecutive naturals, for example, 188654 + ... + 188739.

It is an arithmetic number, because the mean of its divisors is an integer number (4151334).

Almost surely, 2^16227899 is an apocalyptic number.

16227899 is a deficient number, since it is larger than the sum of its proper divisors (377437).

16227899 is an equidigital number, since it uses as much as digits as its factorization.

16227899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 377436.

The product of its digits is 108864, while the sum is 44.

The square root of 16227899 is about 4028.3866497644. The cubic root of 16227899 is about 253.1749689290.

The spelling of 16227899 in words is "sixteen million, two hundred twenty-seven thousand, eight hundred ninety-nine".