2399404032 has 190 divisors, whose sum is σ = 7232014878. Its totient is φ = 792723456.

The previous prime is 2399403997. The next prime is 2399404039. The reversal of 2399404032 is 2304049932.

It can be written as a sum of positive squares in only one way, i.e., 1358954496 + 1040449536 = 36864^2 + 32256^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (2399404039) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 21233608 + ... + 21233720.

Almost surely, 2^2399404032 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 2399404032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3616007439).

2399404032 is an abundant number, since it is smaller than the sum of its proper divisors (4832610846).

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

2399404032 is an frugal number, since it uses more digits than its factorization.

2399404032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161 (or 118 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 36.

The square root of 2399404032 is about 48983.7119050813. The cubic root of 2399404032 is about 1338.7550685965.

The spelling of 2399404032 in words is "two billion, three hundred ninety-nine million, four hundred four thousand, thirty-two".