3988615400 has 96 divisors (see below), whose sum is σ = 11561849280. Its totient is φ = 1243200000.

The previous prime is 3988615349. The next prime is 3988615469. The reversal of 3988615400 is 45168893.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 114101 + ... + 144900.

It is an arithmetic number, because the mean of its divisors is an integer number (120435930).

Almost surely, 2^3988615400 is an apocalyptic number.

It is an amenable number.

3988615400 is an abundant number, since it is smaller than the sum of its proper divisors (7573233880).

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

3988615400 is a wasteful number, since it uses less digits than its factorization.

3988615400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259035 (or 259026 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 44.

The square root of 3988615400 is about 63155.4859058182. The cubic root of 3988615400 is about 1585.8936271086.

The spelling of 3988615400 in words is "three billion, nine hundred eighty-eight million, six hundred fifteen thousand, four hundred".