3421729229 has 2 divisors, whose sum is σ = 3421729230. Its totient is φ = 3421729228.

The previous prime is 3421729217. The next prime is 3421729261. The reversal of 3421729229 is 9229271243.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1947015625 + 1474713604 = 44125^2 + 38402^2 .

It is an emirp because it is prime and its reverse (9229271243) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3421729229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3421789229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1710864614 + 1710864615.

It is an arithmetic number, because the mean of its divisors is an integer number (1710864615).

Almost surely, 2^3421729229 is an apocalyptic number.

It is an amenable number.

3421729229 is a deficient number, since it is larger than the sum of its proper divisors (1).

3421729229 is an equidigital number, since it uses as much as digits as its factorization.

3421729229 is an evil number, because the sum of its binary digits is even.

The product of its digits is 108864, while the sum is 41.

The square root of 3421729229 is about 58495.5487964683. The cubic root of 3421729229 is about 1506.8911417040.

The spelling of 3421729229 in words is "three billion, four hundred twenty-one million, seven hundred twenty-nine thousand, two hundred twenty-nine".