89028664877 has 4 divisors (see below), whose sum is σ = 89313101820. Its totient is φ = 88744227936.

The previous prime is 89028664873. The next prime is 89028664919. The reversal of 89028664877 is 77846682098.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4227730441 + 84800934436 = 65021^2 + 291206^2 .

It is a cyclic number.

It is not a de Polignac number, because 89028664877 - 2² = 89028664873 is a prime.

It is a super-2 number, since 2×89028664877² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89028664873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 142218002 + ... + 142218627.

It is an arithmetic number, because the mean of its divisors is an integer number (22328275455).

Almost surely, 2^89028664877 is an apocalyptic number.

It is an amenable number.

89028664877 is a deficient number, since it is larger than the sum of its proper divisors (284436943).

89028664877 is a wasteful number, since it uses less digits than its factorization.

89028664877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284436942.

The product of its (nonzero) digits is 65028096, while the sum is 65.

The spelling of 89028664877 in words is "eighty-nine billion, twenty-eight million, six hundred sixty-four thousand, eight hundred seventy-seven".