16842389 has 4 divisors (see below), whose sum is σ = 16954080. Its totient is φ = 16730700.

The previous prime is 16842361. The next prime is 16842421. The reversal of 16842389 is 98324861.

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.

It is a cyclic number.

It is not a de Polignac number, because 16842389 - 2²⁴ = 65173 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16842589) 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, 55619 + ... + 55920.

It is an arithmetic number, because the mean of its divisors is an integer number (4238520).

Almost surely, 2^16842389 is an apocalyptic number.

It is an amenable number.

16842389 is a deficient number, since it is larger than the sum of its proper divisors (111691).

16842389 is a wasteful number, since it uses less digits than its factorization.

16842389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111690.

The product of its digits is 82944, while the sum is 41.

The square root of 16842389 is about 4103.9479772531. The cubic root of 16842389 is about 256.3310587108.

The spelling of 16842389 in words is "sixteen million, eight hundred forty-two thousand, three hundred eighty-nine".