133839646439 has 2 divisors, whose sum is σ = 133839646440. Its totient is φ = 133839646438.

The previous prime is 133839646387. The next prime is 133839646459. The reversal of 133839646439 is 934646938331.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 133839646439 - 2⁸ = 133839646183 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 (133839646459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66919823219 + 66919823220.

It is an arithmetic number, because the mean of its divisors is an integer number (66919823220).

Almost surely, 2^133839646439 is an apocalyptic number.

133839646439 is a deficient number, since it is larger than the sum of its proper divisors (1).

133839646439 is an equidigital number, since it uses as much as digits as its factorization.

133839646439 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30233088, while the sum is 59.

The spelling of 133839646439 in words is "one hundred thirty-three billion, eight hundred thirty-nine million, six hundred forty-six thousand, four hundred thirty-nine".