16949693 has 4 divisors (see below), whose sum is σ = 16982748. Its totient is φ = 16916640.

The previous prime is 16949633. The next prime is 16949707. The reversal of 16949693 is 39694961.

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 4853209 + 12096484 = 2203^2 + 3478^2 .

It is a cyclic number.

It is not a de Polignac number, because 16949693 - 2⁸ = 16949437 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 (16949633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15746 + ... + 16787.

It is an arithmetic number, because the mean of its divisors is an integer number (4245687).

Almost surely, 2^16949693 is an apocalyptic number.

It is an amenable number.

16949693 is a deficient number, since it is larger than the sum of its proper divisors (33055).

16949693 is an equidigital number, since it uses as much as digits as its factorization.

16949693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33054.

The product of its digits is 314928, while the sum is 47.

The square root of 16949693 is about 4117.0004857906. Note that the first 3 decimals coincide. The cubic root of 16949693 is about 256.8742742248.

The spelling of 16949693 in words is "sixteen million, nine hundred forty-nine thousand, six hundred ninety-three".