16940549 has 8 divisors (see below), whose sum is σ = 17472672. Its totient is φ = 16416400.

The previous prime is 16940543. The next prime is 16940563. The reversal of 16940549 is 94504961.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16940549 - 2⁸ = 16940293 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 (16940543) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2474 + ... + 6324.

It is an arithmetic number, because the mean of its divisors is an integer number (2184084).

Almost surely, 2^16940549 is an apocalyptic number.

It is an amenable number.

16940549 is a deficient number, since it is larger than the sum of its proper divisors (532123).

16940549 is an equidigital number, since it uses as much as digits as its factorization.

16940549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3987.

The product of its (nonzero) digits is 38880, while the sum is 38.

The square root of 16940549 is about 4115.8898187391. The cubic root of 16940549 is about 256.8280731741.

The spelling of 16940549 in words is "sixteen million, nine hundred forty thousand, five hundred forty-nine".