242986949 has 2 divisors, whose sum is σ = 242986950. Its totient is φ = 242986948.

The previous prime is 242986943. The next prime is 242986979. The reversal of 242986949 is 949689242.

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., 163456225 + 79530724 = 12785^2 + 8918^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-242986949 is a prime.

It is a Sophie Germain 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 242986949.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (242986943) 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, 121493474 + 121493475.

It is an arithmetic number, because the mean of its divisors is an integer number (121493475).

Almost surely, 2^242986949 is an apocalyptic number.

It is an amenable number.

242986949 is a deficient number, since it is larger than the sum of its proper divisors (1).

242986949 is an equidigital number, since it uses as much as digits as its factorization.

242986949 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2239488, while the sum is 53.

The square root of 242986949 is about 15588.0386514789. The cubic root of 242986949 is about 624.0139750390.

The spelling of 242986949 in words is "two hundred forty-two million, nine hundred eighty-six thousand, nine hundred forty-nine".