4456695821 has 2 divisors, whose sum is σ = 4456695822. Its totient is φ = 4456695820.

The previous prime is 4456695799. The next prime is 4456695823. The reversal of 4456695821 is 1285966544.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2432955625 + 2023740196 = 49325^2 + 44986^2 .

It is a cyclic number.

It is not a de Polignac number, because 4456695821 - 2⁶ = 4456695757 is a prime.

Together with 4456695823, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4456695821.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4456695823) 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, 2228347910 + 2228347911.

It is an arithmetic number, because the mean of its divisors is an integer number (2228347911).

Almost surely, 2^4456695821 is an apocalyptic number.

It is an amenable number.

4456695821 is a deficient number, since it is larger than the sum of its proper divisors (1).

4456695821 is an equidigital number, since it uses as much as digits as its factorization.

4456695821 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2073600, while the sum is 50.

The square root of 4456695821 is about 66758.4887561125. The cubic root of 4456695821 is about 1645.6507215141.

The spelling of 4456695821 in words is "four billion, four hundred fifty-six million, six hundred ninety-five thousand, eight hundred twenty-one".