86421893 has 8 divisors (see below), whose sum is σ = 90543360. Its totient is φ = 82383840.

The previous prime is 86421883. The next prime is 86421901. The reversal of 86421893 is 39812468.

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

It is a cyclic number.

It is not a de Polignac number, because 86421893 - 2⁸ = 86421637 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 86421893.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86421883) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18728 + ... + 22881.

It is an arithmetic number, because the mean of its divisors is an integer number (11317920).

Almost surely, 2^86421893 is an apocalyptic number.

It is an amenable number.

86421893 is a deficient number, since it is larger than the sum of its proper divisors (4121467).

86421893 is a wasteful number, since it uses less digits than its factorization.

86421893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41707.

The product of its digits is 82944, while the sum is 41.

The square root of 86421893 is about 9296.3376121998. The cubic root of 86421893 is about 442.1211167304.

The spelling of 86421893 in words is "eighty-six million, four hundred twenty-one thousand, eight hundred ninety-three".