16271889 has 4 divisors (see below), whose sum is σ = 21695856. Its totient is φ = 10847924.

The previous prime is 16271881. The next prime is 16271909. The reversal of 16271889 is 98817261.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 98817261 = 3 ⋅32939087.

It is a cyclic number.

It is not a de Polignac number, because 16271889 - 2³ = 16271881 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 16271889.

It is not an unprimeable number, because it can be changed into a prime (16271881) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2711979 + ... + 2711984.

It is an arithmetic number, because the mean of its divisors is an integer number (5423964).

Almost surely, 2^16271889 is an apocalyptic number.

It is an amenable number.

16271889 is a deficient number, since it is larger than the sum of its proper divisors (5423967).

16271889 is an equidigital number, since it uses as much as digits as its factorization.

16271889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5423966.

The product of its digits is 48384, while the sum is 42.

The square root of 16271889 is about 4033.8429567845. The cubic root of 16271889 is about 253.4035283706.

The spelling of 16271889 in words is "sixteen million, two hundred seventy-one thousand, eight hundred eighty-nine".