989112552469 has 2 divisors, whose sum is σ = 989112552470. Its totient is φ = 989112552468.

The previous prime is 989112552433. The next prime is 989112552473. The reversal of 989112552469 is 964255211989.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 519030911844 + 470081640625 = 720438^2 + 685625^2 .

It is an emirp because it is prime and its reverse (964255211989) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 989112552469 - 2⁷ = 989112552341 is a prime.

It is a super-2 number, since 2×989112552469² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (989112592469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 494556276234 + 494556276235.

It is an arithmetic number, because the mean of its divisors is an integer number (494556276235).

Almost surely, 2^989112552469 is an apocalyptic number.

It is an amenable number.

989112552469 is a deficient number, since it is larger than the sum of its proper divisors (1).

989112552469 is an equidigital number, since it uses as much as digits as its factorization.

989112552469 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13996800, while the sum is 61.

The spelling of 989112552469 in words is "nine hundred eighty-nine billion, one hundred twelve million, five hundred fifty-two thousand, four hundred sixty-nine".