85127889 has 32 divisors (see below), whose sum is σ = 142018560. Its totient is φ = 44064000.

The previous prime is 85127881. The next prime is 85127897. The reversal of 85127889 is 98872158.

It is an interprime number because it is at equal distance from previous prime (85127881) and next prime (85127897).

It is not a de Polignac number, because 85127889 - 2³ = 85127881 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (85127881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 92172 + ... + 93090.

It is an arithmetic number, because the mean of its divisors is an integer number (4438080).

Almost surely, 2^85127889 is an apocalyptic number.

It is an amenable number.

85127889 is a deficient number, since it is larger than the sum of its proper divisors (56890671).

85127889 is a wasteful number, since it uses less digits than its factorization.

85127889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1341.

The product of its digits is 322560, while the sum is 48.

The square root of 85127889 is about 9226.4776052403. The cubic root of 85127889 is about 439.9033689313.

The spelling of 85127889 in words is "eighty-five million, one hundred twenty-seven thousand, eight hundred eighty-nine".