12321959 has 6 divisors (see below), whose sum is σ = 13342896. Its totient is φ = 11373960.

The previous prime is 12321949. The next prime is 12321971. The reversal of 12321959 is 95912321.

It is not a de Polignac number, because 12321959 - 2¹² = 12317863 is a prime.

It is a super-3 number, since 3×12321959³ (a number of 22 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12321919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 36287 + ... + 36624.

It is an arithmetic number, because the mean of its divisors is an integer number (2223816).

Almost surely, 2^12321959 is an apocalyptic number.

12321959 is a deficient number, since it is larger than the sum of its proper divisors (1020937).

12321959 is an equidigital number, since it uses as much as digits as its factorization.

12321959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72937 (or 72924 counting only the distinct ones).

The product of its digits is 4860, while the sum is 32.

The square root of 12321959 is about 3510.2648048260. The cubic root of 12321959 is about 230.9723110431.

The spelling of 12321959 in words is "twelve million, three hundred twenty-one thousand, nine hundred fifty-nine".