2440439 has 2 divisors, whose sum is σ = 2440440. Its totient is φ = 2440438.

The previous prime is 2440421. The next prime is 2440447. The reversal of 2440439 is 9340442.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2440439 - 2¹⁶ = 2374903 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2440489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1220219 + 1220220.

It is an arithmetic number, because the mean of its divisors is an integer number (1220220).

2^2440439 is an apocalyptic number.

2440439 is a deficient number, since it is larger than the sum of its proper divisors (1).

2440439 is an equidigital number, since it uses as much as digits as its factorization.

2440439 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 2440439 is about 1562.1904493371. The cubic root of 2440439 is about 134.6343833614.

The spelling of 2440439 in words is "two million, four hundred forty thousand, four hundred thirty-nine".