2743909 has 4 divisors (see below), whose sum is σ = 3135904. Its totient is φ = 2351916.

The previous prime is 2743901. The next prime is 2743931. The reversal of 2743909 is 9093472.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 2743909 - 2³ = 2743901 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 (2743901) 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 3 ways as a sum of consecutive naturals, for example, 195987 + ... + 196000.

It is an arithmetic number, because the mean of its divisors is an integer number (783976).

2^2743909 is an apocalyptic number.

It is an amenable number.

2743909 is a deficient number, since it is larger than the sum of its proper divisors (391995).

2743909 is an equidigital number, since it uses as much as digits as its factorization.

2743909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 391994.

The product of its (nonzero) digits is 13608, while the sum is 34.

The square root of 2743909 is about 1656.4748715269. The cubic root of 2743909 is about 139.9984523638.

The spelling of 2743909 in words is "two million, seven hundred forty-three thousand, nine hundred nine".