1329471929 has 2 divisors, whose sum is σ = 1329471930. Its totient is φ = 1329471928.

The previous prime is 1329471917. The next prime is 1329471931. The reversal of 1329471929 is 9291749231.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 845471929 + 484000000 = 29077^2 + 22000^2 .

It is a cyclic number.

It is not a de Polignac number, because 1329471929 - 2²⁰ = 1328423353 is a prime.

Together with 1329471931, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1329471959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 664735964 + 664735965.

It is an arithmetic number, because the mean of its divisors is an integer number (664735965).

Almost surely, 2^1329471929 is an apocalyptic number.

It is an amenable number.

1329471929 is a deficient number, since it is larger than the sum of its proper divisors (1).

1329471929 is an equidigital number, since it uses as much as digits as its factorization.

1329471929 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 244944, while the sum is 47.

The square root of 1329471929 is about 36461.9243732417. The cubic root of 1329471929 is about 1099.5788826042.

The spelling of 1329471929 in words is "one billion, three hundred twenty-nine million, four hundred seventy-one thousand, nine hundred twenty-nine".