49559886989 has 2 divisors, whose sum is σ = 49559886990. Its totient is φ = 49559886988.

The previous prime is 49559886949. The next prime is 49559887021. The reversal of 49559886989 is 98968895594.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49146456100 + 413430889 = 221690^2 + 20333^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-49559886989 is a prime.

It is a super-2 number, since 2×49559886989² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49559886949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24779943494 + 24779943495.

It is an arithmetic number, because the mean of its divisors is an integer number (24779943495).

Almost surely, 2^49559886989 is an apocalyptic number.

It is an amenable number.

49559886989 is a deficient number, since it is larger than the sum of its proper divisors (1).

49559886989 is an equidigital number, since it uses as much as digits as its factorization.

49559886989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2015539200, while the sum is 80.

The spelling of 49559886989 in words is "forty-nine billion, five hundred fifty-nine million, eight hundred eighty-six thousand, nine hundred eighty-nine".