249379913369 has 2 divisors, whose sum is σ = 249379913370. Its totient is φ = 249379913368.

The previous prime is 249379913291. The next prime is 249379913401. The reversal of 249379913369 is 963319973942.

249379913369 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 240041203600 + 9338709769 = 489940^2 + 96637^2 .

It is a cyclic number.

It is not a de Polignac number, because 249379913369 - 2²⁰ = 249378864793 is a prime.

It is a super-2 number, since 2×249379913369² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (249379903369) 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, 124689956684 + 124689956685.

It is an arithmetic number, because the mean of its divisors is an integer number (124689956685).

Almost surely, 2^249379913369 is an apocalyptic number.

It is an amenable number.

249379913369 is a deficient number, since it is larger than the sum of its proper divisors (1).

249379913369 is an equidigital number, since it uses as much as digits as its factorization.

249379913369 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 59521392, while the sum is 65.

The spelling of 249379913369 in words is "two hundred forty-nine billion, three hundred seventy-nine million, nine hundred thirteen thousand, three hundred sixty-nine".