86393918 has 8 divisors (see below), whose sum is σ = 139559448. Its totient is φ = 39874104.

The previous prime is 86393917. The next prime is 86393933. The reversal of 86393918 is 81939368.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86393917) 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, 1661396 + ... + 1661447.

It is an arithmetic number, because the mean of its divisors is an integer number (17444931).

Almost surely, 2^86393918 is an apocalyptic number.

86393918 is a deficient number, since it is larger than the sum of its proper divisors (53165530).

86393918 is a wasteful number, since it uses less digits than its factorization.

86393918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3322858.

The product of its digits is 279936, while the sum is 47.

The square root of 86393918 is about 9294.8328656302. The cubic root of 86393918 is about 442.0734063159.

The spelling of 86393918 in words is "eighty-six million, three hundred ninety-three thousand, nine hundred eighteen".