3966921105 has 64 divisors (see below), whose sum is σ = 7373667840. Its totient is φ = 1783627776.

The previous prime is 3966921053. The next prime is 3966921121. The reversal of 3966921105 is 5011296693.

3966921105 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3966921105 - 2⁹ = 3966920593 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5158161 + ... + 5158929.

It is an arithmetic number, because the mean of its divisors is an integer number (115213560).

Almost surely, 2^3966921105 is an apocalyptic number.

3966921105 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

3966921105 is a deficient number, since it is larger than the sum of its proper divisors (3406746735).

3966921105 is a wasteful number, since it uses less digits than its factorization.

3966921105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1530.

The product of its (nonzero) digits is 87480, while the sum is 42.

The square root of 3966921105 is about 62983.4986722713. The cubic root of 3966921105 is about 1583.0131446604.

The spelling of 3966921105 in words is "three billion, nine hundred sixty-six million, nine hundred twenty-one thousand, one hundred five".