2439865240 has 32 divisors (see below), whose sum is σ = 5778630000. Its totient is φ = 924580224.

The previous prime is 2439865217. The next prime is 2439865243. The reversal of 2439865240 is 425689342.

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2439865243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1604415 + ... + 1605934.

Almost surely, 2^2439865240 is an apocalyptic number.

2439865240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2439865240 is an abundant number, since it is smaller than the sum of its proper divisors (3338764760).

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

2439865240 is a wasteful number, since it uses less digits than its factorization.

2439865240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3210379 (or 3210375 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 43.

The square root of 2439865240 is about 49394.9920538510. The cubic root of 2439865240 is about 1346.2383145138.

The spelling of 2439865240 in words is "two billion, four hundred thirty-nine million, eight hundred sixty-five thousand, two hundred forty".