3228947129 has 2 divisors, whose sum is σ = 3228947130. Its totient is φ = 3228947128.

The previous prime is 3228947123. The next prime is 3228947201. The reversal of 3228947129 is 9217498223.

It is a happy number.

3228947129 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., 2398354729 + 830592400 = 48973^2 + 28820^2 .

It is a cyclic number.

It is not a de Polignac number, because 3228947129 - 2⁸ = 3228946873 is a prime.

It is not a weakly prime, because it can be changed into another prime (3228947123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1614473564 + 1614473565.

It is an arithmetic number, because the mean of its divisors is an integer number (1614473565).

Almost surely, 2^3228947129 is an apocalyptic number.

It is an amenable number.

3228947129 is a deficient number, since it is larger than the sum of its proper divisors (1).

3228947129 is an equidigital number, since it uses as much as digits as its factorization.

3228947129 is an evil number, because the sum of its binary digits is even.

The product of its digits is 435456, while the sum is 47.

The square root of 3228947129 is about 56823.8253640143. The cubic root of 3228947129 is about 1478.0426903133.

The spelling of 3228947129 in words is "three billion, two hundred twenty-eight million, nine hundred forty-seven thousand, one hundred twenty-nine".