1329435329 has 2 divisors, whose sum is σ = 1329435330. Its totient is φ = 1329435328.

The previous prime is 1329435307. The next prime is 1329435347. The reversal of 1329435329 is 9235349231.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1102240000 + 227195329 = 33200^2 + 15073^2 .

It is an emirp because it is prime and its reverse (9235349231) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1329435329 is a prime.

It is not a weakly prime, because it can be changed into another prime (1329435379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 664717664 + 664717665.

It is an arithmetic number, because the mean of its divisors is an integer number (664717665).

Almost surely, 2^1329435329 is an apocalyptic number.

It is an amenable number.

1329435329 is a deficient number, since it is larger than the sum of its proper divisors (1).

1329435329 is an equidigital number, since it uses as much as digits as its factorization.

1329435329 is an evil number, because the sum of its binary digits is even.

The product of its digits is 174960, while the sum is 41.

The square root of 1329435329 is about 36461.4224763653. The cubic root of 1329435329 is about 1099.5687921426.

The spelling of 1329435329 in words is "one billion, three hundred twenty-nine million, four hundred thirty-five thousand, three hundred twenty-nine".