505096909 has 2 divisors, whose sum is σ = 505096910. Its totient is φ = 505096908.

The previous prime is 505096903. The next prime is 505096913. The reversal of 505096909 is 909690505.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 356378884 + 148718025 = 18878^2 + 12195^2 .

It is a cyclic number.

It is not a de Polignac number, because 505096909 - 2²³ = 496708301 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (505096903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252548454 + 252548455.

It is an arithmetic number, because the mean of its divisors is an integer number (252548455).

Almost surely, 2^505096909 is an apocalyptic number.

It is an amenable number.

505096909 is a deficient number, since it is larger than the sum of its proper divisors (1).

505096909 is an equidigital number, since it uses as much as digits as its factorization.

505096909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 109350, while the sum is 43.

The square root of 505096909 is about 22474.3611477612. The cubic root of 505096909 is about 796.3883597087.

The spelling of 505096909 in words is "five hundred five million, ninety-six thousand, nine hundred nine".