85612489 has 4 divisors (see below), whose sum is σ = 85659156. Its totient is φ = 85565824.

The previous prime is 85612477. The next prime is 85612567. The reversal of 85612489 is 98421658.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 98421658 = 2 ⋅49210829.

It can be written as a sum of positive squares in 2 ways, for example, as 53406864 + 32205625 = 7308^2 + 5675^2 .

It is a cyclic number.

It is not a de Polignac number, because 85612489 - 2⁷ = 85612361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85612789) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20464 + ... + 24289.

It is an arithmetic number, because the mean of its divisors is an integer number (21414789).

Almost surely, 2^85612489 is an apocalyptic number.

It is an amenable number.

85612489 is a deficient number, since it is larger than the sum of its proper divisors (46667).

85612489 is a wasteful number, since it uses less digits than its factorization.

85612489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46666.

The product of its digits is 138240, while the sum is 43.

The square root of 85612489 is about 9252.7017135537. The cubic root of 85612489 is about 440.7365229773.

The spelling of 85612489 in words is "eighty-five million, six hundred twelve thousand, four hundred eighty-nine".