4921847969 has 2 divisors, whose sum is σ = 4921847970. Its totient is φ = 4921847968.

The previous prime is 4921847933. The next prime is 4921847971. The reversal of 4921847969 is 9697481294.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4766521600 + 155326369 = 69040^2 + 12463^2 .

It is a cyclic number.

It is not a de Polignac number, because 4921847969 - 2²⁰ = 4920799393 is a prime.

It is a super-2 number, since 2×4921847969² = 48449174859898849922, which contains 22 as substring.

Together with 4921847971, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (4921847999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2460923984 + 2460923985.

It is an arithmetic number, because the mean of its divisors is an integer number (2460923985).

Almost surely, 2^4921847969 is an apocalyptic number.

It is an amenable number.

4921847969 is a deficient number, since it is larger than the sum of its proper divisors (1).

4921847969 is an equidigital number, since it uses as much as digits as its factorization.

4921847969 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7838208, while the sum is 59.

The square root of 4921847969 is about 70155.8833527168. The cubic root of 4921847969 is about 1701.0199149693.

The spelling of 4921847969 in words is "four billion, nine hundred twenty-one million, eight hundred forty-seven thousand, nine hundred sixty-nine".