86438 has 8 divisors (see below), whose sum is σ = 141480. Its totient is φ = 39280.

The previous prime is 86423. The next prime is 86441. The reversal of 86438 is 83468.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 86438.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1943 + ... + 1986.

It is an arithmetic number, because the mean of its divisors is an integer number (17685).

2⁸⁶⁴³⁸ is an apocalyptic number.

86438 is a deficient number, since it is larger than the sum of its proper divisors (55042).

86438 is a wasteful number, since it uses less digits than its factorization.

86438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3942.

The product of its digits is 4608, while the sum is 29.

The square root of 86438 is about 294.0034013409. The cubic root of 86438 is about 44.2148582003.

It can be divided in two parts, 8 and 6438, that added together give a palindrome (6446).

The spelling of 86438 in words is "eighty-six thousand, four hundred thirty-eight".