2440891 has 4 divisors (see below), whose sum is σ = 2448472. Its totient is φ = 2433312.

The previous prime is 2440883. The next prime is 2440937. The reversal of 2440891 is 1980442.

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

It is a cyclic number.

It is not a de Polignac number, because 2440891 - 2³ = 2440883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2440831) 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, 3285 + ... + 3958.

It is an arithmetic number, because the mean of its divisors is an integer number (612118).

2^2440891 is an apocalyptic number.

2440891 is a deficient number, since it is larger than the sum of its proper divisors (7581).

2440891 is an equidigital number, since it uses as much as digits as its factorization.

2440891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7580.

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 2440891 is about 1562.3351112997. The cubic root of 2440891 is about 134.6426948421.

The spelling of 2440891 in words is "two million, four hundred forty thousand, eight hundred ninety-one".