3922505921 has 2 divisors, whose sum is σ = 3922505922. Its totient is φ = 3922505920.

The previous prime is 3922505891. The next prime is 3922505929. The reversal of 3922505921 is 1295052293.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2498500225 + 1424005696 = 49985^2 + 37736^2 .

It is a cyclic number.

It is not a de Polignac number, because 3922505921 - 2¹⁴ = 3922489537 is a prime.

It is not a weakly prime, because it can be changed into another prime (3922505929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1961252960 + 1961252961.

It is an arithmetic number, because the mean of its divisors is an integer number (1961252961).

Almost surely, 2^3922505921 is an apocalyptic number.

It is an amenable number.

3922505921 is a deficient number, since it is larger than the sum of its proper divisors (1).

3922505921 is an equidigital number, since it uses as much as digits as its factorization.

3922505921 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48600, while the sum is 38.

The square root of 3922505921 is about 62629.9123502500. The cubic root of 3922505921 is about 1577.0829477438.

The spelling of 3922505921 in words is "three billion, nine hundred twenty-two million, five hundred five thousand, nine hundred twenty-one".