86457289 has 4 divisors (see below), whose sum is σ = 86511124. Its totient is φ = 86403456.

The previous prime is 86457281. The next prime is 86457311. The reversal of 86457289 is 98275468.

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 8311689 + 78145600 = 2883^2 + 8840^2 .

It is a cyclic number.

It is not a de Polignac number, because 86457289 - 2³ = 86457281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86457281) 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, 24432 + ... + 27745.

It is an arithmetic number, because the mean of its divisors is an integer number (21627781).

Almost surely, 2^86457289 is an apocalyptic number.

It is an amenable number.

86457289 is a deficient number, since it is larger than the sum of its proper divisors (53835).

86457289 is a wasteful number, since it uses less digits than its factorization.

86457289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53834.

The product of its digits is 967680, while the sum is 49.

The square root of 86457289 is about 9298.2411777712. The cubic root of 86457289 is about 442.1814686563.

The spelling of 86457289 in words is "eighty-six million, four hundred fifty-seven thousand, two hundred eighty-nine".