3971579850 has 288 divisors, whose sum is σ = 12917923200. Its totient is φ = 906837120.

The previous prime is 3971579827. The next prime is 3971579851. The reversal of 3971579850 is 589751793.

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3971579851) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 4166974 + ... + 4167926.

It is an arithmetic number, because the mean of its divisors is an integer number (44853900).

Almost surely, 2^3971579850 is an apocalyptic number.

3971579850 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 3971579850, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6458961600).

3971579850 is an abundant number, since it is smaller than the sum of its proper divisors (8946343350).

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

3971579850 is an equidigital number, since it uses as much as digits as its factorization.

3971579850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1001 (or 970 counting only the distinct ones).

The product of its (nonzero) digits is 2381400, while the sum is 54.

The square root of 3971579850 is about 63020.4716738934. The cubic root of 3971579850 is about 1583.6325981571.

The spelling of 3971579850 in words is "three billion, nine hundred seventy-one million, five hundred seventy-nine thousand, eight hundred fifty".