2399438808 has 128 divisors (see below), whose sum is σ = 7218993600. Its totient is φ = 734054400.

The previous prime is 2399438791. The next prime is 2399438809. The reversal of 2399438808 is 8088349932.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2399438809) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 505888 + ... + 510608.

Almost surely, 2^2399438808 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2399438808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3609496800).

2399438808 is an abundant number, since it is smaller than the sum of its proper divisors (4819554792).

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

2399438808 is a wasteful number, since it uses less digits than its factorization.

2399438808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4930 (or 4920 counting only the distinct ones).

The product of its (nonzero) digits is 2985984, while the sum is 54.

The square root of 2399438808 is about 48984.0668789352. The cubic root of 2399438808 is about 1338.7615363583.

The spelling of 2399438808 in words is "two billion, three hundred ninety-nine million, four hundred thirty-eight thousand, eight hundred eight".