3960796921 has 8 divisors (see below), whose sum is σ = 4000306464. Its totient is φ = 3921428160.

The previous prime is 3960796919. The next prime is 3960796963. The reversal of 3960796921 is 1296970693.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3960796921 - 2¹ = 3960796919 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3960796621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21810 + ... + 91636.

It is an arithmetic number, because the mean of its divisors is an integer number (500038308).

Almost surely, 2^3960796921 is an apocalyptic number.

It is an amenable number.

3960796921 is a deficient number, since it is larger than the sum of its proper divisors (39509543).

3960796921 is a wasteful number, since it uses less digits than its factorization.

3960796921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70391.

The product of its (nonzero) digits is 1102248, while the sum is 52.

The square root of 3960796921 is about 62934.8625246771. The cubic root of 3960796921 is about 1582.1980997162.

The spelling of 3960796921 in words is "three billion, nine hundred sixty million, seven hundred ninety-six thousand, nine hundred twenty-one".