495055889 has 2 divisors, whose sum is σ = 495055890. Its totient is φ = 495055888.

The previous prime is 495055877. The next prime is 495055909. The reversal of 495055889 is 988550594.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 480486400 + 14569489 = 21920^2 + 3817^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-495055889 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 495055889.

It is not a weakly prime, because it can be changed into another prime (495055829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 247527944 + 247527945.

It is an arithmetic number, because the mean of its divisors is an integer number (247527945).

Almost surely, 2^495055889 is an apocalyptic number.

It is an amenable number.

495055889 is a deficient number, since it is larger than the sum of its proper divisors (1).

495055889 is an equidigital number, since it uses as much as digits as its factorization.

495055889 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592000, while the sum is 53.

The square root of 495055889 is about 22249.8514377063. The cubic root of 495055889 is about 791.0757597879.

The spelling of 495055889 in words is "four hundred ninety-five million, fifty-five thousand, eight hundred eighty-nine".