86438138 has 16 divisors (see below), whose sum is σ = 131280576. Its totient is φ = 42681600.

The previous prime is 86438113. The next prime is 86438147. The reversal of 86438138 is 83183468.

It is a happy number.

It is a super-3 number, since 3×86438138³ (a number of 25 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 86438095 and 86438104.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57545 + ... + 59027.

It is an arithmetic number, because the mean of its divisors is an integer number (8205036).

Almost surely, 2^86438138 is an apocalyptic number.

86438138 is a deficient number, since it is larger than the sum of its proper divisors (44842438).

86438138 is a wasteful number, since it uses less digits than its factorization.

86438138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1829.

The product of its digits is 110592, while the sum is 41.

The square root of 86438138 is about 9297.2113023207. The cubic root of 86438138 is about 442.1488173023.

The spelling of 86438138 in words is "eighty-six million, four hundred thirty-eight thousand, one hundred thirty-eight".