3439805321 has 2 divisors, whose sum is σ = 3439805322. Its totient is φ = 3439805320.

The previous prime is 3439805297. The next prime is 3439805359. The reversal of 3439805321 is 1235089343.

It is an a-pointer prime, because the next prime (3439805359) can be obtained adding 3439805321 to its sum of digits (38).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3433374025 + 6431296 = 58595^2 + 2536^2 .

It is a cyclic number.

It is not a de Polignac number, because 3439805321 - 2¹⁰ = 3439804297 is a prime.

It is not a weakly prime, because it can be changed into another prime (3439805021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1719902660 + 1719902661.

It is an arithmetic number, because the mean of its divisors is an integer number (1719902661).

Almost surely, 2^3439805321 is an apocalyptic number.

It is an amenable number.

3439805321 is a deficient number, since it is larger than the sum of its proper divisors (1).

3439805321 is an equidigital number, since it uses as much as digits as its factorization.

3439805321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 77760, while the sum is 38.

The square root of 3439805321 is about 58649.8535462792. The cubic root of 3439805321 is about 1509.5399854522.

The spelling of 3439805321 in words is "three billion, four hundred thirty-nine million, eight hundred five thousand, three hundred twenty-one".