505303949 has 2 divisors, whose sum is σ = 505303950. Its totient is φ = 505303948.

The previous prime is 505303921. The next prime is 505304047. The reversal of 505303949 is 949303505.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 325261225 + 180042724 = 18035^2 + 13418^2 .

It is a cyclic number.

It is not a de Polignac number, because 505303949 - 2⁸ = 505303693 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (505303349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252651974 + 252651975.

It is an arithmetic number, because the mean of its divisors is an integer number (252651975).

Almost surely, 2^505303949 is an apocalyptic number.

It is an amenable number.

505303949 is a deficient number, since it is larger than the sum of its proper divisors (1).

505303949 is an equidigital number, since it uses as much as digits as its factorization.

505303949 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72900, while the sum is 38.

The square root of 505303949 is about 22478.9668134459. The cubic root of 505303949 is about 796.4971584490.

The spelling of 505303949 in words is "five hundred five million, three hundred three thousand, nine hundred forty-nine".