85628089 has 4 divisors (see below), whose sum is σ = 85657680. Its totient is φ = 85598500.

The previous prime is 85628087. The next prime is 85628113. The reversal of 85628089 is 98082658.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 98082658 = 2 ⋅49041329.

It is a cyclic number.

It is not a de Polignac number, because 85628089 - 2¹ = 85628087 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85628087) 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 3 ways as a sum of consecutive naturals, for example, 9919 + ... + 16420.

It is an arithmetic number, because the mean of its divisors is an integer number (21414420).

Almost surely, 2^85628089 is an apocalyptic number.

It is an amenable number.

85628089 is a deficient number, since it is larger than the sum of its proper divisors (29591).

85628089 is a wasteful number, since it uses less digits than its factorization.

85628089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29590.

The product of its (nonzero) digits is 276480, while the sum is 46.

The square root of 85628089 is about 9253.5446721783. The cubic root of 85628089 is about 440.7632911598.

The spelling of 85628089 in words is "eighty-five million, six hundred twenty-eight thousand, eighty-nine".