13239291749 has 2 divisors, whose sum is σ = 13239291750. Its totient is φ = 13239291748.

The previous prime is 13239291733. The next prime is 13239291761. The reversal of 13239291749 is 94719293231.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9751562500 + 3487729249 = 98750^2 + 59057^2 .

It is a cyclic number.

It is not a de Polignac number, because 13239291749 - 2⁴ = 13239291733 is a prime.

It is a super-3 number, since 3×13239291749³ (a number of 31 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13239291697 and 13239291706.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13239291449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6619645874 + 6619645875.

It is an arithmetic number, because the mean of its divisors is an integer number (6619645875).

Almost surely, 2^13239291749 is an apocalyptic number.

It is an amenable number.

13239291749 is a deficient number, since it is larger than the sum of its proper divisors (1).

13239291749 is an equidigital number, since it uses as much as digits as its factorization.

13239291749 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 734832, while the sum is 50.

The spelling of 13239291749 in words is "thirteen billion, two hundred thirty-nine million, two hundred ninety-one thousand, seven hundred forty-nine".