1320599097 has 12 divisors (see below), whose sum is σ = 1910516244. Its totient is φ = 879022080.

The previous prime is 1320599089. The next prime is 1320599099. The reversal of 1320599097 is 7909950231.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1197921321 + 122677776 = 34611^2 + 11076^2 .

It is not a de Polignac number, because 1320599097 - 2³ = 1320599089 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1320599099) 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 11 ways as a sum of consecutive naturals, for example, 108688 + ... + 120225.

It is an arithmetic number, because the mean of its divisors is an integer number (159209687).

Almost surely, 2^1320599097 is an apocalyptic number.

It is an amenable number.

1320599097 is a deficient number, since it is larger than the sum of its proper divisors (589917147).

1320599097 is a wasteful number, since it uses less digits than its factorization.

1320599097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229560 (or 229557 counting only the distinct ones).

The product of its (nonzero) digits is 153090, while the sum is 45.

The square root of 1320599097 is about 36340.0481149929. The cubic root of 1320599097 is about 1097.1272415046.

The spelling of 1320599097 in words is "one billion, three hundred twenty million, five hundred ninety-nine thousand, ninety-seven".