495591869 has 2 divisors, whose sum is σ = 495591870. Its totient is φ = 495591868.

The previous prime is 495591853. The next prime is 495591893. The reversal of 495591869 is 968195594.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 322669369 + 172922500 = 17963^2 + 13150^2 .

It is a cyclic number.

It is not a de Polignac number, because 495591869 - 2⁴ = 495591853 is a prime.

It is a super-2 number, since 2×495591869² = 491222601237826322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (495591809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 247795934 + 247795935.

It is an arithmetic number, because the mean of its divisors is an integer number (247795935).

Almost surely, 2^495591869 is an apocalyptic number.

It is an amenable number.

495591869 is a deficient number, since it is larger than the sum of its proper divisors (1).

495591869 is an equidigital number, since it uses as much as digits as its factorization.

495591869 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3499200, while the sum is 56.

The square root of 495591869 is about 22261.8927542112. The cubic root of 495591869 is about 791.3611470005.

The spelling of 495591869 in words is "four hundred ninety-five million, five hundred ninety-one thousand, eight hundred sixty-nine".