16947189 has 36 divisors (see below), whose sum is σ = 28881216. Its totient is φ = 9546768.

The previous prime is 16947167. The next prime is 16947191. The reversal of 16947189 is 98174961.

It is a happy number.

It is not a de Polignac number, because 16947189 - 2⁵ = 16947157 is a prime.

It is a super-3 number, since 3×16947189³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16947149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 36372 + ... + 36834.

It is an arithmetic number, because the mean of its divisors is an integer number (802256).

Almost surely, 2^16947189 is an apocalyptic number.

It is an amenable number.

16947189 is a deficient number, since it is larger than the sum of its proper divisors (11934027).

16947189 is a wasteful number, since it uses less digits than its factorization.

16947189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 566 (or 556 counting only the distinct ones).

The product of its digits is 108864, while the sum is 45.

The square root of 16947189 is about 4116.6963696634. The cubic root of 16947189 is about 256.8616241459.

The spelling of 16947189 in words is "sixteen million, nine hundred forty-seven thousand, one hundred eighty-nine".