16323889 has 4 divisors (see below), whose sum is σ = 16376356. Its totient is φ = 16271424.

The previous prime is 16323871. The next prime is 16323911. The reversal of 16323889 is 98832361.

16323889 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 98832361 = 43 ⋅2298427.

It can be written as a sum of positive squares in 2 ways, for example, as 7884864 + 8439025 = 2808^2 + 2905^2 .

It is a cyclic number.

It is not a de Polignac number, because 16323889 - 2¹³ = 16315697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16323809) 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, 25764 + ... + 26389.

It is an arithmetic number, because the mean of its divisors is an integer number (4094089).

Almost surely, 2^16323889 is an apocalyptic number.

It is an amenable number.

16323889 is a deficient number, since it is larger than the sum of its proper divisors (52467).

16323889 is an equidigital number, since it uses as much as digits as its factorization.

16323889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52466.

The product of its digits is 62208, while the sum is 40.

The square root of 16323889 is about 4040.2832821474. The cubic root of 16323889 is about 253.6731748306.

The spelling of 16323889 in words is "sixteen million, three hundred twenty-three thousand, eight hundred eighty-nine".