2439855 has 64 divisors (see below), whose sum is σ = 4976640. Its totient is φ = 1123200.

The previous prime is 2439839. The next prime is 2439881. The reversal of 2439855 is 5589342.

It is not a de Polignac number, because 2439855 - 2⁴ = 2439839 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 46009 + ... + 46061.

It is an arithmetic number, because the mean of its divisors is an integer number (77760).

2^2439855 is an apocalyptic number.

2439855 is an abundant number, since it is smaller than the sum of its proper divisors (2536785).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2439855 is a wasteful number, since it uses less digits than its factorization.

2439855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109 (or 103 counting only the distinct ones).

The product of its digits is 43200, while the sum is 36.

The square root of 2439855 is about 1562.0035211228. The cubic root of 2439855 is about 134.6236431145.

The spelling of 2439855 in words is "two million, four hundred thirty-nine thousand, eight hundred fifty-five".