86534909 has 4 divisors (see below), whose sum is σ = 86559804. Its totient is φ = 86510016.

The previous prime is 86534893. The next prime is 86534933. The reversal of 86534909 is 90943568.

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 37576900 + 48958009 = 6130^2 + 6997^2 .

It is a cyclic number.

It is not a de Polignac number, because 86534909 - 2⁴ = 86534893 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 86534909.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86534999) 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, 6182 + ... + 14535.

It is an arithmetic number, because the mean of its divisors is an integer number (21639951).

Almost surely, 2^86534909 is an apocalyptic number.

It is an amenable number.

86534909 is a deficient number, since it is larger than the sum of its proper divisors (24895).

86534909 is a wasteful number, since it uses less digits than its factorization.

86534909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24894.

The product of its (nonzero) digits is 233280, while the sum is 44.

The square root of 86534909 is about 9302.4141490260. The cubic root of 86534909 is about 442.3137569411.

The spelling of 86534909 in words is "eighty-six million, five hundred thirty-four thousand, nine hundred nine".