2800439 has 2 divisors, whose sum is σ = 2800440. Its totient is φ = 2800438.

The previous prime is 2800403. The next prime is 2800451. The reversal of 2800439 is 9340082.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2800439 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2800459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1400219 + 1400220.

It is an arithmetic number, because the mean of its divisors is an integer number (1400220).

2^2800439 is an apocalyptic number.

2800439 is a deficient number, since it is larger than the sum of its proper divisors (1).

2800439 is an equidigital number, since it uses as much as digits as its factorization.

2800439 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 2800439 is about 1673.4512242668. The cubic root of 2800439 is about 140.9533403615.

The spelling of 2800439 in words is "two million, eight hundred thousand, four hundred thirty-nine".