1213330439 has 2 divisors, whose sum is σ = 1213330440. Its totient is φ = 1213330438.

The previous prime is 1213330429. The next prime is 1213330487. The reversal of 1213330439 is 9340333121.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1213330439 - 2²⁴ = 1196553223 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1213330429) 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, 606665219 + 606665220.

It is an arithmetic number, because the mean of its divisors is an integer number (606665220).

Almost surely, 2^1213330439 is an apocalyptic number.

1213330439 is a deficient number, since it is larger than the sum of its proper divisors (1).

1213330439 is an equidigital number, since it uses as much as digits as its factorization.

1213330439 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5832, while the sum is 29.

The square root of 1213330439 is about 34832.8930610135. The cubic root of 1213330439 is about 1066.5790059580.

The spelling of 1213330439 in words is "one billion, two hundred thirteen million, three hundred thirty thousand, four hundred thirty-nine".