3971387904 has 320 divisors, whose sum is σ = 12374208000. Its totient is φ = 1119191040.

The previous prime is 3971387887. The next prime is 3971387941. The reversal of 3971387904 is 4097831793.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28571067 + ... + 28571205.

It is an arithmetic number, because the mean of its divisors is an integer number (38669400).

Almost surely, 2^3971387904 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 3971387904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6187104000).

3971387904 is an abundant number, since it is smaller than the sum of its proper divisors (8402820096).

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

3971387904 is a wasteful number, since it uses less digits than its factorization.

3971387904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279 (or 263 counting only the distinct ones).

The product of its (nonzero) digits is 1143072, while the sum is 51.

The square root of 3971387904 is about 63018.9487693979. The cubic root of 3971387904 is about 1583.6070854853.

The spelling of 3971387904 in words is "three billion, nine hundred seventy-one million, three hundred eighty-seven thousand, nine hundred four".