86544893 has 4 divisors (see below), whose sum is σ = 86573820. Its totient is φ = 86515968.

The previous prime is 86544877. The next prime is 86544937. The reversal of 86544893 is 39844568.

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 83576164 + 2968729 = 9142^2 + 1723^2 .

It is a cyclic number.

It is not a de Polignac number, because 86544893 - 2⁴ = 86544877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86544803) 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, 9380 + ... + 16157.

It is an arithmetic number, because the mean of its divisors is an integer number (21643455).

Almost surely, 2^86544893 is an apocalyptic number.

It is an amenable number.

86544893 is a deficient number, since it is larger than the sum of its proper divisors (28927).

86544893 is a wasteful number, since it uses less digits than its factorization.

86544893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28926.

The product of its digits is 829440, while the sum is 47.

The square root of 86544893 is about 9302.9507684390. The cubic root of 86544893 is about 442.3307669963.

The spelling of 86544893 in words is "eighty-six million, five hundred forty-four thousand, eight hundred ninety-three".