3911987232 has 144 divisors (see below), whose sum is σ = 12121391520. Its totient is φ = 1227211776.

The previous prime is 3911987231. The next prime is 3911987263. The reversal of 3911987232 is 2327891193.

3911987232 is a `hidden beast` number, since 391 + 198 + 72 + 3 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is not an unprimeable number, because it can be changed into a prime (3911987231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 241863 + ... + 257529.

It is an arithmetic number, because the mean of its divisors is an integer number (84176330).

Almost surely, 2^3911987232 is an apocalyptic number.

3911987232 is a gapful number since it is divisible by the number (32) 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 3911987232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6060695760).

3911987232 is an abundant number, since it is smaller than the sum of its proper divisors (8209404288).

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

3911987232 is a wasteful number, since it uses less digits than its factorization.

3911987232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15720 (or 15689 counting only the distinct ones).

The product of its digits is 163296, while the sum is 45.

The square root of 3911987232 is about 62545.8810154594. The cubic root of 3911987232 is about 1575.6719708605.

The spelling of 3911987232 in words is "three billion, nine hundred eleven million, nine hundred eighty-seven thousand, two hundred thirty-two".