3961921084 has 48 divisors (see below), whose sum is σ = 7763255136. Its totient is φ = 1753856000.

The previous prime is 3961921079. The next prime is 3961921109. The reversal of 3961921084 is 4801291693.

It is a happy number.

3961921084 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 3961921084.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 313284 + ... + 325684.

It is an arithmetic number, because the mean of its divisors is an integer number (161734482).

Almost surely, 2^3961921084 is an apocalyptic number.

It is an amenable number.

3961921084 is a deficient number, since it is larger than the sum of its proper divisors (3801334052).

3961921084 is a wasteful number, since it uses less digits than its factorization.

3961921084 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12606 (or 12604 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 43.

The square root of 3961921084 is about 62943.7930538032. The cubic root of 3961921084 is about 1582.3477733258.

The spelling of 3961921084 in words is "three billion, nine hundred sixty-one million, nine hundred twenty-one thousand, eighty-four".