86854489297 has 4 divisors (see below), whose sum is σ = 88493253300. Its totient is φ = 85215725296.

The previous prime is 86854489291. The next prime is 86854489313. The reversal of 86854489297 is 79298445868.

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 70310355921 + 16544133376 = 265161^2 + 128624^2 .

It is a cyclic number.

It is not a de Polignac number, because 86854489297 - 2²⁷ = 86720271569 is a prime.

It is a super-2 number, since 2×86854489297² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86854489291) 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, 819381922 + ... + 819382027.

It is an arithmetic number, because the mean of its divisors is an integer number (22123313325).

Almost surely, 2^86854489297 is an apocalyptic number.

It is an amenable number.

86854489297 is a deficient number, since it is larger than the sum of its proper divisors (1638764003).

86854489297 is a wasteful number, since it uses less digits than its factorization.

86854489297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1638764002.

The product of its digits is 278691840, while the sum is 70.

The spelling of 86854489297 in words is "eighty-six billion, eight hundred fifty-four million, four hundred eighty-nine thousand, two hundred ninety-seven".