1329308077 has 4 divisors (see below), whose sum is σ = 1399271680. Its totient is φ = 1259344476.

The previous prime is 1329308033. The next prime is 1329308089. The reversal of 1329308077 is 7708039231.

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.

It is a cyclic number.

It is not a de Polignac number, because 1329308077 - 2⁷ = 1329307949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1329302077) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34981773 + ... + 34981810.

It is an arithmetic number, because the mean of its divisors is an integer number (349817920).

Almost surely, 2^1329308077 is an apocalyptic number.

It is an amenable number.

1329308077 is a deficient number, since it is larger than the sum of its proper divisors (69963603).

1329308077 is an equidigital number, since it uses as much as digits as its factorization.

1329308077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69963602.

The product of its (nonzero) digits is 63504, while the sum is 40.

The square root of 1329308077 is about 36459.6774121769. The cubic root of 1329308077 is about 1099.5337078754.

The spelling of 1329308077 in words is "one billion, three hundred twenty-nine million, three hundred eight thousand, seventy-seven".