2740091 has 4 divisors (see below), whose sum is σ = 2743800. Its totient is φ = 2736384.

The previous prime is 2740069. The next prime is 2740093. The reversal of 2740091 is 1900472.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 2740091 - 2⁶ = 2740027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2740093) 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, 326 + ... + 2363.

It is an arithmetic number, because the mean of its divisors is an integer number (685950).

2^2740091 is an apocalyptic number.

2740091 is a deficient number, since it is larger than the sum of its proper divisors (3709).

2740091 is a wasteful number, since it uses less digits than its factorization.

2740091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3708.

The product of its (nonzero) digits is 504, while the sum is 23.

The square root of 2740091 is about 1655.3220230517. The cubic root of 2740091 is about 139.9334888150.

The spelling of 2740091 in words is "two million, seven hundred forty thousand, ninety-one".