3968921432 has 32 divisors (see below), whose sum is σ = 8522353920. Its totient is φ = 1697461920.

The previous prime is 3968921431. The next prime is 3968921449. The reversal of 3968921432 is 2341298693.

It is a hoax number, since the sum of its digits (47) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3968921431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45494 + ... + 100037.

It is an arithmetic number, because the mean of its divisors is an integer number (266323560).

Almost surely, 2^3968921432 is an apocalyptic number.

It is an amenable number.

3968921432 is an abundant number, since it is smaller than the sum of its proper divisors (4553432488).

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

3968921432 is a wasteful number, since it uses less digits than its factorization.

3968921432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146031 (or 146027 counting only the distinct ones).

The product of its digits is 559872, while the sum is 47.

The square root of 3968921432 is about 62999.3764413585. The cubic root of 3968921432 is about 1583.2791790108.

The spelling of 3968921432 in words is "three billion, nine hundred sixty-eight million, nine hundred twenty-one thousand, four hundred thirty-two".