16974493 has 4 divisors (see below), whose sum is σ = 17189440. Its totient is φ = 16759548.

The previous prime is 16974487. The next prime is 16974499. The reversal of 16974493 is 39447961.

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 an interprime number because it is at equal distance from previous prime (16974487) and next prime (16974499).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16974493 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16974499) 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, 107355 + ... + 107512.

It is an arithmetic number, because the mean of its divisors is an integer number (4297360).

Almost surely, 2^16974493 is an apocalyptic number.

It is an amenable number.

16974493 is a deficient number, since it is larger than the sum of its proper divisors (214947).

16974493 is an equidigital number, since it uses as much as digits as its factorization.

16974493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214946.

The product of its digits is 163296, while the sum is 43.

The square root of 16974493 is about 4120.0112863923. The cubic root of 16974493 is about 256.9994953232. Note that the first 3 decimals are identical.

The spelling of 16974493 in words is "sixteen million, nine hundred seventy-four thousand, four hundred ninety-three".