86398 has 8 divisors (see below), whose sum is σ = 139608. Its totient is φ = 39864.

The previous prime is 86389. The next prime is 86399. The reversal of 86398 is 89368.

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

It is a super-2 number, since 2×86398² = 14929228808, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86399) by changing a digit.

86398 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1636 + ... + 1687.

It is an arithmetic number, because the mean of its divisors is an integer number (17451).

2⁸⁶³⁹⁸ is an apocalyptic number.

86398 is a deficient number, since it is larger than the sum of its proper divisors (53210).

86398 is a wasteful number, since it uses less digits than its factorization.

86398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3338.

The product of its digits is 10368, while the sum is 34.

The square root of 86398 is about 293.9353670452. The cubic root of 86398 is about 44.2080368670.

It can be divided in two parts, 863 and 98, that added together give a square (961 = 31²).

The spelling of 86398 in words is "eighty-six thousand, three hundred ninety-eight".