4407382121 has 2 divisors, whose sum is σ = 4407382122. Its totient is φ = 4407382120.

The previous prime is 4407382117. The next prime is 4407382157. The reversal of 4407382121 is 1212837044.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4037204521 + 370177600 = 63539^2 + 19240^2 .

It is a cyclic number.

It is not a de Polignac number, because 4407382121 - 2² = 4407382117 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (4407385121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2203691060 + 2203691061.

It is an arithmetic number, because the mean of its divisors is an integer number (2203691061).

Almost surely, 2^4407382121 is an apocalyptic number.

It is an amenable number.

4407382121 is a deficient number, since it is larger than the sum of its proper divisors (1).

4407382121 is an equidigital number, since it uses as much as digits as its factorization.

4407382121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10752, while the sum is 32.

The square root of 4407382121 is about 66388.1173177851. The cubic root of 4407382121 is about 1639.5584426209.

The spelling of 4407382121 in words is "four billion, four hundred seven million, three hundred eighty-two thousand, one hundred twenty-one".