3829509221 has 2 divisors, whose sum is σ = 3829509222. Its totient is φ = 3829509220.

The previous prime is 3829509217. The next prime is 3829509227. The reversal of 3829509221 is 1229059283.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3708201025 + 121308196 = 60895^2 + 11014^2 .

It is a cyclic number.

It is not a de Polignac number, because 3829509221 - 2² = 3829509217 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3829509227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1914754610 + 1914754611.

It is an arithmetic number, because the mean of its divisors is an integer number (1914754611).

Almost surely, 2^3829509221 is an apocalyptic number.

It is an amenable number.

3829509221 is a deficient number, since it is larger than the sum of its proper divisors (1).

3829509221 is an equidigital number, since it uses as much as digits as its factorization.

3829509221 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 41.

The square root of 3829509221 is about 61883.0285377178. The cubic root of 3829509221 is about 1564.5197137996.

The spelling of 3829509221 in words is "three billion, eight hundred twenty-nine million, five hundred nine thousand, two hundred twenty-one".