4949956621 has 2 divisors, whose sum is σ = 4949956622. Its totient is φ = 4949956620.

The previous prime is 4949956603. The next prime is 4949956633. The reversal of 4949956621 is 1266599494.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3084580521 + 1865376100 = 55539^2 + 43190^2 .

It is a cyclic number.

It is not a de Polignac number, because 4949956621 - 2⁷ = 4949956493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4949956021) 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, 2474978310 + 2474978311.

It is an arithmetic number, because the mean of its divisors is an integer number (2474978311).

Almost surely, 2^4949956621 is an apocalyptic number.

It is an amenable number.

4949956621 is a deficient number, since it is larger than the sum of its proper divisors (1).

4949956621 is an equidigital number, since it uses as much as digits as its factorization.

4949956621 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4199040, while the sum is 55.

The square root of 4949956621 is about 70355.9281155469. The cubic root of 4949956621 is about 1704.2519424630.

The spelling of 4949956621 in words is "four billion, nine hundred forty-nine million, nine hundred fifty-six thousand, six hundred twenty-one".