3996400000 has 192 divisors, whose sum is σ = 10151537760. Its totient is φ = 1566720000.

The previous prime is 3996399991. The next prime is 3996400027. The reversal of 3996400000 is 46993.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 38799949 + ... + 38800051.

Almost surely, 2^3996400000 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 3996400000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5075768880).

3996400000 is an abundant number, since it is smaller than the sum of its proper divisors (6155137760).

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

3996400000 is an frugal number, since it uses more digits than its factorization.

3996400000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239 (or 207 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 31.

The square root of 3996400000 is about 63217.0862979306. The cubic root of 3996400000 is about 1586.9246887150.

Adding to 3996400000 its reverse (46993), we get a palindrome (3996446993).

The spelling of 3996400000 in words is "three billion, nine hundred ninety-six million, four hundred thousand".