86838529 has 4 divisors (see below), whose sum is σ = 87087700. Its totient is φ = 86589360.

The previous prime is 86838523. The next prime is 86838553. The reversal of 86838529 is 92583868.

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 29866225 + 56972304 = 5465^2 + 7548^2 .

It is a cyclic number.

It is not a de Polignac number, because 86838529 - 2¹⁷ = 86707457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86838523) 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, 124062 + ... + 124759.

It is an arithmetic number, because the mean of its divisors is an integer number (21771925).

Almost surely, 2^86838529 is an apocalyptic number.

It is an amenable number.

86838529 is a deficient number, since it is larger than the sum of its proper divisors (249171).

86838529 is a wasteful number, since it uses less digits than its factorization.

86838529 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249170.

The product of its digits is 829440, while the sum is 49.

The square root of 86838529 is about 9318.7192789567. The cubic root of 86838529 is about 442.8304599502.

The spelling of 86838529 in words is "eighty-six million, eight hundred thirty-eight thousand, five hundred twenty-nine".