3975721088 has 48 divisors (see below), whose sum is σ = 7975462110. Its totient is φ = 1974097920.

The previous prime is 3975721081. The next prime is 3975721103. The reversal of 3975721088 is 8801275793.

It can be written as a sum of positive squares in only one way, i.e., 2977666624 + 998054464 = 54568^2 + 31592^2 .

It is not an unprimeable number, because it can be changed into a prime (3975721081) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11074253 + ... + 11074611.

Almost surely, 2^3975721088 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 3975721088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3987731055).

3975721088 is an abundant number, since it is smaller than the sum of its proper divisors (3999741022).

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

3975721088 is an frugal number, since it uses more digits than its factorization.

3975721088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 973 (or 602 counting only the distinct ones).

The product of its (nonzero) digits is 846720, while the sum is 50.

The square root of 3975721088 is about 63053.3194050876. The cubic root of 3975721088 is about 1584.1828343863.

The spelling of 3975721088 in words is "three billion, nine hundred seventy-five million, seven hundred twenty-one thousand, eighty-eight".