249983953 has 2 divisors, whose sum is σ = 249983954. Its totient is φ = 249983952.

The previous prime is 249983939. The next prime is 249984017. The reversal of 249983953 is 359389942.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 230341329 + 19642624 = 15177^2 + 4432^2 .

It is a cyclic number.

It is not a de Polignac number, because 249983953 - 2¹⁷ = 249852881 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 249983953.

It is not a weakly prime, because it can be changed into another prime (249983753) 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, 124991976 + 124991977.

It is an arithmetic number, because the mean of its divisors is an integer number (124991977).

Almost surely, 2^249983953 is an apocalyptic number.

It is an amenable number.

249983953 is a deficient number, since it is larger than the sum of its proper divisors (1).

249983953 is an equidigital number, since it uses as much as digits as its factorization.

249983953 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2099520, while the sum is 52.

The square root of 249983953 is about 15810.8808420024. The cubic root of 249983953 is about 629.9470460236.

The spelling of 249983953 in words is "two hundred forty-nine million, nine hundred eighty-three thousand, nine hundred fifty-three".