4939684261 has 2 divisors, whose sum is σ = 4939684262. Its totient is φ = 4939684260.

The previous prime is 4939684259. The next prime is 4939684279. The reversal of 4939684261 is 1624869394.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4674320161 + 265364100 = 68369^2 + 16290^2 .

It is a cyclic number.

It is not a de Polignac number, because 4939684261 - 2¹ = 4939684259 is a prime.

It is a super-2 number, since 2×4939684261² = 48800961196742232242, which contains 22 as substring.

Together with 4939684259, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 4939684199 and 4939684208.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4939684661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2469842130 + 2469842131.

It is an arithmetic number, because the mean of its divisors is an integer number (2469842131).

Almost surely, 2^4939684261 is an apocalyptic number.

It is an amenable number.

4939684261 is a deficient number, since it is larger than the sum of its proper divisors (1).

4939684261 is an equidigital number, since it uses as much as digits as its factorization.

4939684261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2239488, while the sum is 52.

The square root of 4939684261 is about 70282.8873980004. The cubic root of 4939684261 is about 1703.0722140320.

The spelling of 4939684261 in words is "four billion, nine hundred thirty-nine million, six hundred eighty-four thousand, two hundred sixty-one".