4420547861 has 2 divisors, whose sum is σ = 4420547862. Its totient is φ = 4420547860.

The previous prime is 4420547851. The next prime is 4420547863. The reversal of 4420547861 is 1687450244.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4148132836 + 272415025 = 64406^2 + 16505^2 .

It is a cyclic number.

It is not a de Polignac number, because 4420547861 - 2²⁶ = 4353438997 is a prime.

It is a Sophie Germain prime.

Together with 4420547863, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4420547863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2210273930 + 2210273931.

It is an arithmetic number, because the mean of its divisors is an integer number (2210273931).

Almost surely, 2^4420547861 is an apocalyptic number.

It is an amenable number.

4420547861 is a deficient number, since it is larger than the sum of its proper divisors (1).

4420547861 is an equidigital number, since it uses as much as digits as its factorization.

4420547861 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 215040, while the sum is 41.

The square root of 4420547861 is about 66487.2007306670. The cubic root of 4420547861 is about 1641.1893837151.

The spelling of 4420547861 in words is "four billion, four hundred twenty million, five hundred forty-seven thousand, eight hundred sixty-one".