2840039 has 2 divisors, whose sum is σ = 2840040. Its totient is φ = 2840038.

The previous prime is 2840027. The next prime is 2840041. The reversal of 2840039 is 9300482.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2840039 - 2⁴ = 2840023 is a prime.

It is a Sophie Germain prime.

Together with 2840041, 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 (2840059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1420019 + 1420020.

It is an arithmetic number, because the mean of its divisors is an integer number (1420020).

2^2840039 is an apocalyptic number.

2840039 is a deficient number, since it is larger than the sum of its proper divisors (1).

2840039 is an equidigital number, since it uses as much as digits as its factorization.

2840039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 2840039 is about 1685.2415257167. The cubic root of 2840039 is about 141.6146232517.

The spelling of 2840039 in words is "two million, eight hundred forty thousand, thirty-nine".