86523438 has 16 divisors (see below), whose sum is σ = 183226320. Its totient is φ = 27144576.

The previous prime is 86523431. The next prime is 86523467. The reversal of 86523438 is 83432568.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 86523396 and 86523405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86523431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 424033 + ... + 424236.

It is an arithmetic number, because the mean of its divisors is an integer number (11451645).

Almost surely, 2^86523438 is an apocalyptic number.

86523438 is an abundant number, since it is smaller than the sum of its proper divisors (96702882).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

86523438 is a wasteful number, since it uses less digits than its factorization.

86523438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 848291.

The product of its digits is 138240, while the sum is 39.

The square root of 86523438 is about 9301.7975682123. The cubic root of 86523438 is about 442.2942118220.

It can be divided in two parts, 8652 and 3438, that added together give a triangular number (12090 = T₁₅₅).

The spelling of 86523438 in words is "eighty-six million, five hundred twenty-three thousand, four hundred thirty-eight".