1329456969 has 10 divisors (see below), whose sum is σ = 1985979050. Its totient is φ = 886304592.

The previous prime is 1329456959. The next prime is 1329456983. The reversal of 1329456969 is 9696549231.

1329456969 is a `hidden beast` number, since 13 + 2 + 9 + 4 + 569 + 69 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1316818944 + 12638025 = 36288^2 + 3555^2 .

It is not a de Polignac number, because 1329456969 - 2⁷ = 1329456841 is a prime.

It is a super-2 number, since 2×1329456969² = 3534911664845333922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1329456949) 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 9 ways as a sum of consecutive naturals, for example, 8206444 + ... + 8206605.

It is an arithmetic number, because the mean of its divisors is an integer number (198597905).

Almost surely, 2^1329456969 is an apocalyptic number.

It is an amenable number.

1329456969 is a deficient number, since it is larger than the sum of its proper divisors (656522081).

1329456969 is an equidigital number, since it uses as much as digits as its factorization.

1329456969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16413061 (or 16413052 counting only the distinct ones).

The product of its digits is 3149280, while the sum is 54.

The square root of 1329456969 is about 36461.7192271566. The cubic root of 1329456969 is about 1099.5747582193.

The spelling of 1329456969 in words is "one billion, three hundred twenty-nine million, four hundred fifty-six thousand, nine hundred sixty-nine".