1328047229 has 2 divisors, whose sum is σ = 1328047230. Its totient is φ = 1328047228.

The previous prime is 1328047219. The next prime is 1328047247. The reversal of 1328047229 is 9227408231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1058200900 + 269846329 = 32530^2 + 16427^2 .

It is an emirp because it is prime and its reverse (9227408231) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1328047229 - 2⁴ = 1328047213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1328047192 and 1328047201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1328047219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 664023614 + 664023615.

It is an arithmetic number, because the mean of its divisors is an integer number (664023615).

Almost surely, 2^1328047229 is an apocalyptic number.

It is an amenable number.

1328047229 is a deficient number, since it is larger than the sum of its proper divisors (1).

1328047229 is an equidigital number, since it uses as much as digits as its factorization.

1328047229 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 1328047229 is about 36442.3823178452. The cubic root of 1328047229 is about 1099.1859621955.

The spelling of 1328047229 in words is "one billion, three hundred twenty-eight million, forty-seven thousand, two hundred twenty-nine".