3977147832 has 64 divisors (see below), whose sum is σ = 11412161280. Its totient is φ = 1131439872.

The previous prime is 3977147827. The next prime is 3977147861. The reversal of 3977147832 is 2387417793.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11658 + ... + 89945.

It is an arithmetic number, because the mean of its divisors is an integer number (178315020).

Almost surely, 2^3977147832 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 3977147832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5706080640).

3977147832 is an abundant number, since it is smaller than the sum of its proper divisors (7435013448).

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

3977147832 is a wasteful number, since it uses less digits than its factorization.

3977147832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101852 (or 101848 counting only the distinct ones).

The product of its digits is 1778112, while the sum is 51.

The square root of 3977147832 is about 63064.6321800104. The cubic root of 3977147832 is about 1584.3723138951.

The spelling of 3977147832 in words is "three billion, nine hundred seventy-seven million, one hundred forty-seven thousand, eight hundred thirty-two".