89740087889 has 2 divisors, whose sum is σ = 89740087890. Its totient is φ = 89740087888.

The previous prime is 89740087847. The next prime is 89740087933. The reversal of 89740087889 is 98878004798.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 56244865600 + 33495222289 = 237160^2 + 183017^2 .

It is a cyclic number.

It is not a de Polignac number, because 89740087889 - 2¹² = 89740083793 is a prime.

It is not a weakly prime, because it can be changed into another prime (89740087189) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44870043944 + 44870043945.

It is an arithmetic number, because the mean of its divisors is an integer number (44870043945).

Almost surely, 2^89740087889 is an apocalyptic number.

It is an amenable number.

89740087889 is a deficient number, since it is larger than the sum of its proper divisors (1).

89740087889 is an equidigital number, since it uses as much as digits as its factorization.

89740087889 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 65028096, while the sum is 68.

The spelling of 89740087889 in words is "eighty-nine billion, seven hundred forty million, eighty-seven thousand, eight hundred eighty-nine".