3989617632 has 576 divisors, whose sum is σ = 15926803200. Its totient is φ = 955100160.

The previous prime is 3989617591. The next prime is 3989617637. The reversal of 3989617632 is 2367169893.

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

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3989617637) by changing a digit.

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 95 ways as a sum of consecutive naturals, for example, 6053719 + ... + 6054377.

It is an arithmetic number, because the mean of its divisors is an integer number (27650700).

Almost surely, 2^3989617632 is an apocalyptic number.

3989617632 is a gapful number since it is divisible by the number (32) 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 3989617632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7963401600).

3989617632 is an abundant number, since it is smaller than the sum of its proper divisors (11937185568).

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

3989617632 is a wasteful number, since it uses less digits than its factorization.

3989617632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 716 (or 695 counting only the distinct ones).

The product of its digits is 2939328, while the sum is 54.

The square root of 3989617632 is about 63163.4200467327. The cubic root of 3989617632 is about 1586.0264468195.

The spelling of 3989617632 in words is "three billion, nine hundred eighty-nine million, six hundred seventeen thousand, six hundred thirty-two".