16943494 has 4 divisors (see below), whose sum is σ = 25415244. Its totient is φ = 8471746.

The previous prime is 16943491. The next prime is 16943501. The reversal of 16943494 is 49434961.

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

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16943491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4235872 + ... + 4235875.

It is an arithmetic number, because the mean of its divisors is an integer number (6353811).

Almost surely, 2^16943494 is an apocalyptic number.

16943494 is a deficient number, since it is larger than the sum of its proper divisors (8471750).

16943494 is an equidigital number, since it uses as much as digits as its factorization.

16943494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8471749.

The product of its digits is 93312, while the sum is 40.

The square root of 16943494 is about 4116.2475630117. The cubic root of 16943494 is about 256.8429549202.

The spelling of 16943494 in words is "sixteen million, nine hundred forty-three thousand, four hundred ninety-four".