249291451108589 has 2 divisors, whose sum is σ = 249291451108590. Its totient is φ = 249291451108588.

The previous prime is 249291451108559. The next prime is 249291451108669. The reversal of 249291451108589 is 985801154192942.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 240327816300100 + 8963634808489 = 15502510^2 + 2993933^2 .

It is a cyclic number.

It is not a de Polignac number, because 249291451108589 - 2⁸ = 249291451108333 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (249291451108519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124645725554294 + 124645725554295.

It is an arithmetic number, because the mean of its divisors is an integer number (124645725554295).

Almost surely, 2^{249291451108589} is an apocalyptic number.

It is an amenable number.

249291451108589 is a deficient number, since it is larger than the sum of its proper divisors (1).

249291451108589 is an equidigital number, since it uses as much as digits as its factorization.

249291451108589 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 74649600, while the sum is 68.

The spelling of 249291451108589 in words is "two hundred forty-nine trillion, two hundred ninety-one billion, four hundred fifty-one million, one hundred eight thousand, five hundred eighty-nine".