249769841 has 2 divisors, whose sum is σ = 249769842. Its totient is φ = 249769840.

The previous prime is 249769829. The next prime is 249769853. The reversal of 249769841 is 148967942.

It is a balanced prime because it is at equal distance from previous prime (249769829) and next prime (249769853).

It can be written as a sum of positive squares in only one way, i.e., 227406400 + 22363441 = 15080^2 + 4729^2 .

It is a cyclic number.

It is not a de Polignac number, because 249769841 - 2⁶ = 249769777 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 249769841.

It is not a weakly prime, because it can be changed into another prime (249759841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124884920 + 124884921.

It is an arithmetic number, because the mean of its divisors is an integer number (124884921).

Almost surely, 2^249769841 is an apocalyptic number.

It is an amenable number.

249769841 is a deficient number, since it is larger than the sum of its proper divisors (1).

249769841 is an equidigital number, since it uses as much as digits as its factorization.

249769841 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 870912, while the sum is 50.

The square root of 249769841 is about 15804.1083582719. The cubic root of 249769841 is about 629.7671441449.

The spelling of 249769841 in words is "two hundred forty-nine million, seven hundred sixty-nine thousand, eight hundred forty-one".