3829369721 has 2 divisors, whose sum is σ = 3829369722. Its totient is φ = 3829369720.

The previous prime is 3829369711. The next prime is 3829369777. The reversal of 3829369721 is 1279639283.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3141042025 + 688327696 = 56045^2 + 26236^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3829369721 is a prime.

It is a super-2 number, since 2×3829369721² = 29328144920223235682, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 3829369721.

It is not a weakly prime, because it can be changed into another prime (3829369711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1914684860 + 1914684861.

It is an arithmetic number, because the mean of its divisors is an integer number (1914684861).

Almost surely, 2^3829369721 is an apocalyptic number.

It is an amenable number.

3829369721 is a deficient number, since it is larger than the sum of its proper divisors (1).

3829369721 is an equidigital number, since it uses as much as digits as its factorization.

3829369721 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 979776, while the sum is 50.

The square root of 3829369721 is about 61881.9014009751. The cubic root of 3829369721 is about 1564.5007163130.

The spelling of 3829369721 in words is "three billion, eight hundred twenty-nine million, three hundred sixty-nine thousand, seven hundred twenty-one".