3991234176 has 112 divisors (see below), whose sum is σ = 11921755410. Its totient is φ = 1330380288.

The previous prime is 3991234139. The next prime is 3991234189. The reversal of 3991234176 is 6714321993.

3991234176 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 3896755776 + 94478400 = 62424^2 + 9720^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 71926 + ... + 114698.

Almost surely, 2^3991234176 is an apocalyptic number.

3991234176 is a gapful number since it is divisible by the number (36) 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 3991234176, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5960877705).

3991234176 is an abundant number, since it is smaller than the sum of its proper divisors (7930521234).

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

3991234176 is an frugal number, since it uses more digits than its factorization.

3991234176 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42805 (or 42778 counting only the distinct ones).

The product of its digits is 244944, while the sum is 45.

The square root of 3991234176 is about 63176.2152712554. The cubic root of 3991234176 is about 1586.2406306976.

It can be divided in two parts, 39912 and 34176, that added together give a cube (74088 = 42³).

The spelling of 3991234176 in words is "three billion, nine hundred ninety-one million, two hundred thirty-four thousand, one hundred seventy-six".