4469729681 has 2 divisors, whose sum is σ = 4469729682. Its totient is φ = 4469729680.

The previous prime is 4469729617. The next prime is 4469729717. The reversal of 4469729681 is 1869279644.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4433429056 + 36300625 = 66584^2 + 6025^2 .

It is a cyclic number.

It is not a de Polignac number, because 4469729681 - 2⁶ = 4469729617 is a prime.

It is a super-2 number, since 2×4469729681² = 39956966842424723522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (4469729881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2234864840 + 2234864841.

It is an arithmetic number, because the mean of its divisors is an integer number (2234864841).

Almost surely, 2^4469729681 is an apocalyptic number.

It is an amenable number.

4469729681 is a deficient number, since it is larger than the sum of its proper divisors (1).

4469729681 is an equidigital number, since it uses as much as digits as its factorization.

4469729681 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5225472, while the sum is 56.

The square root of 4469729681 is about 66856.0369824596. The cubic root of 4469729681 is about 1647.2534264550.

The spelling of 4469729681 in words is "four billion, four hundred sixty-nine million, seven hundred twenty-nine thousand, six hundred eighty-one".