3952904380121 has 2 divisors, whose sum is σ = 3952904380122. Its totient is φ = 3952904380120.

The previous prime is 3952904380049. The next prime is 3952904380171. The reversal of 3952904380121 is 1210834092593.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3952895499721 + 8880400 = 1988189^2 + 2980^2 .

It is a cyclic number.

It is not a de Polignac number, because 3952904380121 - 2³⁴ = 3935724510937 is a prime.

It is not a weakly prime, because it can be changed into another prime (3952904380171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1976452190060 + 1976452190061.

It is an arithmetic number, because the mean of its divisors is an integer number (1976452190061).

Almost surely, 2^{3952904380121} is an apocalyptic number.

It is an amenable number.

3952904380121 is a deficient number, since it is larger than the sum of its proper divisors (1).

3952904380121 is an equidigital number, since it uses as much as digits as its factorization.

3952904380121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 466560, while the sum is 47.

The spelling of 3952904380121 in words is "three trillion, nine hundred fifty-two billion, nine hundred four million, three hundred eighty thousand, one hundred twenty-one".