12378833 has 2 divisors, whose sum is σ = 12378834. Its totient is φ = 12378832.

The previous prime is 12378809. The next prime is 12378841. The reversal of 12378833 is 33887321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10452289 + 1926544 = 3233^2 + 1388^2 .

It is a cyclic number.

It is not a de Polignac number, because 12378833 - 2¹² = 12374737 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12378793 and 12378802.

It is not a weakly prime, because it can be changed into another prime (12368833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6189416 + 6189417.

It is an arithmetic number, because the mean of its divisors is an integer number (6189417).

Almost surely, 2^12378833 is an apocalyptic number.

It is an amenable number.

12378833 is a deficient number, since it is larger than the sum of its proper divisors (1).

12378833 is an equidigital number, since it uses as much as digits as its factorization.

12378833 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24192, while the sum is 35.

The square root of 12378833 is about 3518.3565765852. The cubic root of 12378833 is about 231.3271290811.

The spelling of 12378833 in words is "twelve million, three hundred seventy-eight thousand, eight hundred thirty-three".