2440839 has 4 divisors (see below), whose sum is σ = 3254456. Its totient is φ = 1627224.

The previous prime is 2440831. The next prime is 2440849. The reversal of 2440839 is 9380442.

It is a happy number.

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

It is not a de Polignac number, because 2440839 - 2³ = 2440831 is a prime.

It is a D-number.

It is a Duffinian number.

It is a nialpdrome in base 12.

It is a congruent 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, 406804 + ... + 406809.

It is an arithmetic number, because the mean of its divisors is an integer number (813614).

2^2440839 is an apocalyptic number.

2440839 is a deficient number, since it is larger than the sum of its proper divisors (813617).

2440839 is an equidigital number, since it uses as much as digits as its factorization.

2440839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 813616.

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 2440839 is about 1562.3184694549. The cubic root of 2440839 is about 134.6417387063.

The spelling of 2440839 in words is "two million, four hundred forty thousand, eight hundred thirty-nine".