3087421921 has 2 divisors, whose sum is σ = 3087421922. Its totient is φ = 3087421920.

The previous prime is 3087421907. The next prime is 3087421933. The reversal of 3087421921 is 1291247803.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1663416225 + 1424005696 = 40785^2 + 37736^2 .

It is a cyclic number.

It is not a de Polignac number, because 3087421921 - 2¹¹ = 3087419873 is a prime.

It is not a weakly prime, because it can be changed into another prime (3087421021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1543710960 + 1543710961.

It is an arithmetic number, because the mean of its divisors is an integer number (1543710961).

Almost surely, 2^3087421921 is an apocalyptic number.

It is an amenable number.

3087421921 is a deficient number, since it is larger than the sum of its proper divisors (1).

3087421921 is an equidigital number, since it uses as much as digits as its factorization.

3087421921 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 3087421921 is about 55564.5743347324. The cubic root of 3087421921 is about 1456.1250095502.

The spelling of 3087421921 in words is "three billion, eighty-seven million, four hundred twenty-one thousand, nine hundred twenty-one".