4002442439 has 2 divisors, whose sum is σ = 4002442440. Its totient is φ = 4002442438.

The previous prime is 4002442399. The next prime is 4002442441. The reversal of 4002442439 is 9342442004.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4002442439 is a prime.

Together with 4002442441, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4002442489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2001221219 + 2001221220.

It is an arithmetic number, because the mean of its divisors is an integer number (2001221220).

Almost surely, 2^4002442439 is an apocalyptic number.

4002442439 is a deficient number, since it is larger than the sum of its proper divisors (1).

4002442439 is an equidigital number, since it uses as much as digits as its factorization.

4002442439 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27648, while the sum is 32.

The square root of 4002442439 is about 63264.8594323895. The cubic root of 4002442439 is about 1587.7240804155.

The spelling of 4002442439 in words is "four billion, two million, four hundred forty-two thousand, four hundred thirty-nine".