86455609 has 4 divisors (see below), whose sum is σ = 86480116. Its totient is φ = 86431104.

The previous prime is 86455573. The next prime is 86455613. The reversal of 86455609 is 90655468.

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 33965584 + 52490025 = 5828^2 + 7245^2 .

It is a cyclic number.

It is not a de Polignac number, because 86455609 - 2⁹ = 86455097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86455619) 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, 5844 + ... + 14389.

It is an arithmetic number, because the mean of its divisors is an integer number (21620029).

Almost surely, 2^86455609 is an apocalyptic number.

It is an amenable number.

86455609 is a deficient number, since it is larger than the sum of its proper divisors (24507).

86455609 is a wasteful number, since it uses less digits than its factorization.

86455609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24506.

The product of its (nonzero) digits is 259200, while the sum is 43.

The square root of 86455609 is about 9298.1508376666. The cubic root of 86455609 is about 442.1786045458.

The spelling of 86455609 in words is "eighty-six million, four hundred fifty-five thousand, six hundred nine".