3945120329 has 2 divisors, whose sum is σ = 3945120330. Its totient is φ = 3945120328.

The previous prime is 3945120323. The next prime is 3945120341. The reversal of 3945120329 is 9230215493.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3172280329 + 772840000 = 56323^2 + 27800^2 .

It is an emirp because it is prime and its reverse (9230215493) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3945120329 - 2⁴ = 3945120313 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3945120292 and 3945120301.

It is not a weakly prime, because it can be changed into another prime (3945120323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1972560164 + 1972560165.

It is an arithmetic number, because the mean of its divisors is an integer number (1972560165).

Almost surely, 2^3945120329 is an apocalyptic number.

It is an amenable number.

3945120329 is a deficient number, since it is larger than the sum of its proper divisors (1).

3945120329 is an equidigital number, since it uses as much as digits as its factorization.

3945120329 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 58320, while the sum is 38.

The square root of 3945120329 is about 62810.1928750422. The cubic root of 3945120329 is about 1580.1079252507.

The spelling of 3945120329 in words is "three billion, nine hundred forty-five million, one hundred twenty thousand, three hundred twenty-nine".