2439858 has 16 divisors (see below), whose sum is σ = 4913856. Its totient is φ = 807600.

The previous prime is 2439839. The next prime is 2439881. The reversal of 2439858 is 8589342.

It is a happy number.

2439858 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 441 + ... + 2252.

It is an arithmetic number, because the mean of its divisors is an integer number (307116).

2^2439858 is an apocalyptic number.

2439858 is an abundant number, since it is smaller than the sum of its proper divisors (2473998).

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

2439858 is a wasteful number, since it uses less digits than its factorization.

2439858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2849.

The product of its digits is 69120, while the sum is 39.

The square root of 2439858 is about 1562.0044814276. The cubic root of 2439858 is about 134.6236982914.

It can be divided in two parts, 243 and 9858, that added together give a palindrome (10101).

The spelling of 2439858 in words is "two million, four hundred thirty-nine thousand, eight hundred fifty-eight".