2399840920 has 16 divisors (see below), whose sum is σ = 5399642160. Its totient is φ = 959936352.

The previous prime is 2399840917. The next prime is 2399840929. The reversal of 2399840920 is 290489932.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2399840929) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29997972 + ... + 29998051.

It is an arithmetic number, because the mean of its divisors is an integer number (337477635).

Almost surely, 2^2399840920 is an apocalyptic number.

2399840920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2399840920 is an abundant number, since it is smaller than the sum of its proper divisors (2999801240).

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

2399840920 is a wasteful number, since it uses less digits than its factorization.

2399840920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59996034 (or 59996030 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 46.

The square root of 2399840920 is about 48988.1712253070. The cubic root of 2399840920 is about 1338.8363180125.

The spelling of 2399840920 in words is "two billion, three hundred ninety-nine million, eight hundred forty thousand, nine hundred twenty".