3241138729 has 2 divisors, whose sum is σ = 3241138730. Its totient is φ = 3241138728.

The previous prime is 3241138699. The next prime is 3241138777. The reversal of 3241138729 is 9278311423.

3241138729 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1821582400 + 1419556329 = 42680^2 + 37677^2 .

It is an emirp because it is prime and its reverse (9278311423) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3241138729 - 2¹⁹ = 3240614441 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3241138691 and 3241138700.

It is not a weakly prime, because it can be changed into another prime (3241138799) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1620569364 + 1620569365.

It is an arithmetic number, because the mean of its divisors is an integer number (1620569365).

Almost surely, 2^3241138729 is an apocalyptic number.

It is an amenable number.

3241138729 is a deficient number, since it is larger than the sum of its proper divisors (1).

3241138729 is an equidigital number, since it uses as much as digits as its factorization.

3241138729 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72576, while the sum is 40.

The square root of 3241138729 is about 56930.9997189580. Note that the first 3 decimals coincide. The cubic root of 3241138729 is about 1479.9005790592.

The spelling of 3241138729 in words is "three billion, two hundred forty-one million, one hundred thirty-eight thousand, seven hundred twenty-nine".