1321477599 has 12 divisors (see below), whose sum is σ = 1897832328. Its totient is φ = 813077280.

The previous prime is 1321477589. The next prime is 1321477603. The reversal of 1321477599 is 9957741231.

It is not a de Polignac number, because 1321477599 - 2⁷ = 1321477471 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321477559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 224109 + ... + 229929.

It is an arithmetic number, because the mean of its divisors is an integer number (158152694).

Almost surely, 2^1321477599 is an apocalyptic number.

1321477599 is a deficient number, since it is larger than the sum of its proper divisors (576354729).

1321477599 is an frugal number, since it uses more digits than its factorization.

1321477599 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11658 (or 5837 counting only the distinct ones).

The product of its digits is 476280, while the sum is 48.

The square root of 1321477599 is about 36352.1333486771. The cubic root of 1321477599 is about 1097.3704681923.

The spelling of 1321477599 in words is "one billion, three hundred twenty-one million, four hundred seventy-seven thousand, five hundred ninety-nine".