1329924917 has 2 divisors, whose sum is σ = 1329924918. Its totient is φ = 1329924916.

The previous prime is 1329924889. The next prime is 1329924923. The reversal of 1329924917 is 7194299231.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1050667396 + 279257521 = 32414^2 + 16711^2 .

It is a cyclic number.

It is not a de Polignac number, because 1329924917 - 2¹² = 1329920821 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1329924997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 664962458 + 664962459.

It is an arithmetic number, because the mean of its divisors is an integer number (664962459).

Almost surely, 2^1329924917 is an apocalyptic number.

It is an amenable number.

1329924917 is a deficient number, since it is larger than the sum of its proper divisors (1).

1329924917 is an equidigital number, since it uses as much as digits as its factorization.

1329924917 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 1329924917 is about 36468.1356392125. The cubic root of 1329924917 is about 1099.7037541082.

The spelling of 1329924917 in words is "one billion, three hundred twenty-nine million, nine hundred twenty-four thousand, nine hundred seventeen".