3998032500 has 720 divisors, whose sum is σ = 15795343872. Its totient is φ = 776160000.

The previous prime is 3998032499. The next prime is 3998032501. The reversal of 3998032500 is 52308993.

3998032500 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (3998032499) and next prime (3998032501).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3998032501) by changing a digit.

It is a polite number, since it can be written in 239 ways as a sum of consecutive naturals, for example, 92977479 + ... + 92977521.

Almost surely, 2^3998032500 is an apocalyptic number.

3998032500 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3998032500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7897671936).

3998032500 is an abundant number, since it is smaller than the sum of its proper divisors (11797311372).

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

3998032500 is a wasteful number, since it uses less digits than its factorization.

3998032500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118 (or 94 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 39.

The square root of 3998032500 is about 63229.9968369444. The cubic root of 3998032500 is about 1587.1407416527.

The spelling of 3998032500 in words is "three billion, nine hundred ninety-eight million, thirty-two thousand, five hundred".