85134489 has 16 divisors (see below), whose sum is σ = 124009920. Its totient is φ = 51522560.

The previous prime is 85134481. The next prime is 85134493. The reversal of 85134489 is 98443158.

It is a cyclic number.

It is not a de Polignac number, because 85134489 - 2³ = 85134481 is a prime.

It is a super-2 number, since 2×85134489² = 14495762434582242, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 85134489.

It is not an unprimeable number, because it can be changed into a prime (85134481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29269 + ... + 32045.

It is an arithmetic number, because the mean of its divisors is an integer number (7750620).

Almost surely, 2^85134489 is an apocalyptic number.

It is an amenable number.

85134489 is a deficient number, since it is larger than the sum of its proper divisors (38875431).

85134489 is a wasteful number, since it uses less digits than its factorization.

85134489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3720.

The product of its digits is 138240, while the sum is 42.

The square root of 85134489 is about 9226.8352645964. The cubic root of 85134489 is about 439.9147372668.

The spelling of 85134489 in words is "eighty-five million, one hundred thirty-four thousand, four hundred eighty-nine".