89889633877 has 2 divisors, whose sum is σ = 89889633878. Its totient is φ = 89889633876.

The previous prime is 89889633833. The next prime is 89889633881. The reversal of 89889633877 is 77833698898.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 86723771121 + 3165862756 = 294489^2 + 56266^2 .

It is a cyclic number.

It is not a de Polignac number, because 89889633877 - 2⁷ = 89889633749 is a prime.

It is a super-2 number, since 2×89889633877² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (89889633277) 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, 44944816938 + 44944816939.

It is an arithmetic number, because the mean of its divisors is an integer number (44944816939).

Almost surely, 2^89889633877 is an apocalyptic number.

It is an amenable number.

89889633877 is a deficient number, since it is larger than the sum of its proper divisors (1).

89889633877 is an equidigital number, since it uses as much as digits as its factorization.

89889633877 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 877879296, while the sum is 76.

The spelling of 89889633877 in words is "eighty-nine billion, eight hundred eighty-nine million, six hundred thirty-three thousand, eight hundred seventy-seven".