1329987017 has 4 divisors (see below), whose sum is σ = 1372889856. Its totient is φ = 1287084180.

The previous prime is 1329986989. The next prime is 1329987031. The reversal of 1329987017 is 7107899231.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7107899231 = 23 ⋅309039097.

It is a cyclic number.

It is not a de Polignac number, because 1329987017 - 2⁸ = 1329986761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1329987037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21451373 + ... + 21451434.

It is an arithmetic number, because the mean of its divisors is an integer number (343222464).

Almost surely, 2^1329987017 is an apocalyptic number.

It is an amenable number.

1329987017 is a deficient number, since it is larger than the sum of its proper divisors (42902839).

1329987017 is an equidigital number, since it uses as much as digits as its factorization.

1329987017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42902838.

The product of its (nonzero) digits is 190512, while the sum is 47.

The square root of 1329987017 is about 36468.9870574986. The cubic root of 1329987017 is about 1099.7208704981.

The spelling of 1329987017 in words is "one billion, three hundred twenty-nine million, nine hundred eighty-seven thousand, seventeen".