16874393 has 4 divisors (see below), whose sum is σ = 16898148. Its totient is φ = 16850640.

The previous prime is 16874381. The next prime is 16874423. The reversal of 16874393 is 39347861.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 10259209 + 6615184 = 3203^2 + 2572^2 .

It is a cyclic number.

It is not a de Polignac number, because 16874393 - 2²⁴ = 97177 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16874393.

It is not an unprimeable number, because it can be changed into a prime (16814393) 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, 10778 + ... + 12243.

It is an arithmetic number, because the mean of its divisors is an integer number (4224537).

Almost surely, 2^16874393 is an apocalyptic number.

It is an amenable number.

16874393 is a deficient number, since it is larger than the sum of its proper divisors (23755).

16874393 is an equidigital number, since it uses as much as digits as its factorization.

16874393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23754.

The product of its digits is 108864, while the sum is 41.

The square root of 16874393 is about 4107.8452989371. The cubic root of 16874393 is about 256.4933165412.

The spelling of 16874393 in words is "sixteen million, eight hundred seventy-four thousand, three hundred ninety-three".