16949943 has 12 divisors (see below), whose sum is σ = 24819600. Its totient is φ = 11144736.

The previous prime is 16949929. The next prime is 16949951. The reversal of 16949943 is 34994961.

It is not a de Polignac number, because 16949943 - 2⁴ = 16949927 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16949923) 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 11 ways as a sum of consecutive naturals, for example, 12243 + ... + 13556.

It is an arithmetic number, because the mean of its divisors is an integer number (2068300).

Almost surely, 2^16949943 is an apocalyptic number.

16949943 is a deficient number, since it is larger than the sum of its proper divisors (7869657).

16949943 is a wasteful number, since it uses less digits than its factorization.

16949943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25878 (or 25875 counting only the distinct ones).

The product of its digits is 209952, while the sum is 45.

The square root of 16949943 is about 4117.0308475891. The cubic root of 16949943 is about 256.8755371435.

The spelling of 16949943 in words is "sixteen million, nine hundred forty-nine thousand, nine hundred forty-three".