16729091 has 4 divisors (see below), whose sum is σ = 16964784. Its totient is φ = 16493400.

The previous prime is 16729081. The next prime is 16729099. The reversal of 16729091 is 19092761.

16729091 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16729091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16729099) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 117740 + ... + 117881.

It is an arithmetic number, because the mean of its divisors is an integer number (4241196).

Almost surely, 2^16729091 is an apocalyptic number.

16729091 is a deficient number, since it is larger than the sum of its proper divisors (235693).

16729091 is an equidigital number, since it uses as much as digits as its factorization.

16729091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235692.

The product of its (nonzero) digits is 6804, while the sum is 35.

The square root of 16729091 is about 4090.1211473500. The cubic root of 16729091 is about 255.7549891736.

The spelling of 16729091 in words is "sixteen million, seven hundred twenty-nine thousand, ninety-one".