3921104225 has 6 divisors (see below), whose sum is σ = 4862169270. Its totient is φ = 3136883360.

The previous prime is 3921104207. The next prime is 3921104227. The reversal of 3921104225 is 5224011293.

It can be written as a sum of positive squares in 3 ways, for example, as 81938704 + 3839165521 = 9052^2 + 61961^2 .

It is not a de Polignac number, because 3921104225 - 2²⁰ = 3920055649 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3921104227) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 78422060 + ... + 78422109.

It is an arithmetic number, because the mean of its divisors is an integer number (810361545).

Almost surely, 2^3921104225 is an apocalyptic number.

It is an amenable number.

3921104225 is a deficient number, since it is larger than the sum of its proper divisors (941065045).

3921104225 is a wasteful number, since it uses less digits than its factorization.

3921104225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156844179 (or 156844174 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 3921104225 is about 62618.7210425125. The cubic root of 3921104225 is about 1576.8950700391.

The spelling of 3921104225 in words is "three billion, nine hundred twenty-one million, one hundred four thousand, two hundred twenty-five".