3960913121 has 16 divisors (see below), whose sum is σ = 4465152000. Its totient is φ = 3480949200.

The previous prime is 3960913111. The next prime is 3960913123. The reversal of 3960913121 is 1213190693.

It is a cyclic number.

It is not a de Polignac number, because 3960913121 - 2⁶ = 3960913057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3960913123) 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 15 ways as a sum of consecutive naturals, for example, 341780 + ... + 353178.

It is an arithmetic number, because the mean of its divisors is an integer number (279072000).

Almost surely, 2^3960913121 is an apocalyptic number.

3960913121 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

3960913121 is a deficient number, since it is larger than the sum of its proper divisors (504238879).

3960913121 is a wasteful number, since it uses less digits than its factorization.

3960913121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12460.

The product of its (nonzero) digits is 8748, while the sum is 35.

The square root of 3960913121 is about 62935.7856946269. The cubic root of 3960913121 is about 1582.2135721599.

The spelling of 3960913121 in words is "three billion, nine hundred sixty million, nine hundred thirteen thousand, one hundred twenty-one".