2729091 has 4 divisors (see below), whose sum is σ = 3638792. Its totient is φ = 1819392.

The previous prime is 2729087. The next prime is 2729093. The reversal of 2729091 is 1909272.

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

It is not a de Polignac number, because 2729091 - 2² = 2729087 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2729093) 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, 454846 + ... + 454851.

It is an arithmetic number, because the mean of its divisors is an integer number (909698).

2^2729091 is an apocalyptic number.

2729091 is a deficient number, since it is larger than the sum of its proper divisors (909701).

2729091 is an equidigital number, since it uses as much as digits as its factorization.

2729091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 909700.

The product of its (nonzero) digits is 2268, while the sum is 30.

The square root of 2729091 is about 1651.9960653706. The cubic root of 2729091 is about 139.7459849739.

The spelling of 2729091 in words is "two million, seven hundred twenty-nine thousand, ninety-one".