508889388949 has 2 divisors, whose sum is σ = 508889388950. Its totient is φ = 508889388948.

The previous prime is 508889388923. The next prime is 508889388977. The reversal of 508889388949 is 949883988805.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 283779944100 + 225109444849 = 532710^2 + 474457^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-508889388949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (508889388149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 254444694474 + 254444694475.

It is an arithmetic number, because the mean of its divisors is an integer number (254444694475).

Almost surely, 2^508889388949 is an apocalyptic number.

It is an amenable number.

508889388949 is a deficient number, since it is larger than the sum of its proper divisors (1).

508889388949 is an equidigital number, since it uses as much as digits as its factorization.

508889388949 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1433272320, while the sum is 79.

The spelling of 508889388949 in words is "five hundred eight billion, eight hundred eighty-nine million, three hundred eighty-eight thousand, nine hundred forty-nine".