2864439 has 6 divisors (see below), whose sum is σ = 4137536. Its totient is φ = 1909620.

The previous prime is 2864423. The next prime is 2864441. The reversal of 2864439 is 9344682.

It is a happy number.

2864439 is a `hidden beast` number, since 2 + 8 + 644 + 3 + 9 = 666.

It is not a de Polignac number, because 2864439 - 2⁴ = 2864423 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2864419) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 159127 + ... + 159144.

2^2864439 is an apocalyptic number.

2864439 is a deficient number, since it is larger than the sum of its proper divisors (1273097).

2864439 is a wasteful number, since it uses less digits than its factorization.

2864439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318277 (or 318274 counting only the distinct ones).

The product of its digits is 41472, while the sum is 36.

The square root of 2864439 is about 1692.4653615362. The cubic root of 2864439 is about 142.0190247604.

The spelling of 2864439 in words is "two million, eight hundred sixty-four thousand, four hundred thirty-nine".