505949 has 2 divisors, whose sum is σ = 505950. Its totient is φ = 505948.

The previous prime is 505927. The next prime is 505961. The reversal of 505949 is 949505.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 504100 + 1849 = 710^2 + 43^2 .

It is a cyclic number.

It is not a de Polignac number, because 505949 - 2⁸ = 505693 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (505919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252974 + 252975.

It is an arithmetic number, because the mean of its divisors is an integer number (252975).

2⁵⁰⁵⁹⁴⁹ is an apocalyptic number.

It is an amenable number.

505949 is a deficient number, since it is larger than the sum of its proper divisors (1).

505949 is an equidigital number, since it uses as much as digits as its factorization.

505949 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8100, while the sum is 32.

The square root of 505949 is about 711.3009208486. The cubic root of 505949 is about 79.6835939903.

Subtracting 505949 from its reverse (949505), we obtain a square (443556 = 666²).

The spelling of 505949 in words is "five hundred five thousand, nine hundred forty-nine".