86319138 has 32 divisors (see below), whose sum is σ = 186364800. Its totient is φ = 26571776.

The previous prime is 86319133. The next prime is 86319157. The reversal of 86319138 is 83191368.

It is a junction number, because it is equal to n+sod(n) for n = 86319096 and 86319105.

It is not an unprimeable number, because it can be changed into a prime (86319131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6783 + ... + 14786.

It is an arithmetic number, because the mean of its divisors is an integer number (5823900).

Almost surely, 2^86319138 is an apocalyptic number.

86319138 is an abundant number, since it is smaller than the sum of its proper divisors (100045662).

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

86319138 is a wasteful number, since it uses less digits than its factorization.

86319138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21626.

The product of its digits is 31104, while the sum is 39.

The square root of 86319138 is about 9290.8093296548. The cubic root of 86319138 is about 441.9458209767.

The spelling of 86319138 in words is "eighty-six million, three hundred nineteen thousand, one hundred thirty-eight".