2440091 has 2 divisors, whose sum is σ = 2440092. Its totient is φ = 2440090.

The previous prime is 2440079. The next prime is 2440111. The reversal of 2440091 is 1900442.

It is an a-pointer prime, because the next prime (2440111) can be obtained adding 2440091 to its sum of digits (20).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2440091 - 2¹⁰ = 2439067 is a prime.

It is not a weakly prime, because it can be changed into another prime (2440021) 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 as a sum of consecutive naturals, namely, 1220045 + 1220046.

It is an arithmetic number, because the mean of its divisors is an integer number (1220046).

2^2440091 is an apocalyptic number.

2440091 is a deficient number, since it is larger than the sum of its proper divisors (1).

2440091 is an equidigital number, since it uses as much as digits as its factorization.

2440091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 2440091 is about 1562.0790632999. The cubic root of 2440091 is about 134.6279835576.

The spelling of 2440091 in words is "two million, four hundred forty thousand, ninety-one".