86138487 has 6 divisors (see below), whose sum is σ = 124422272. Its totient is φ = 57425652.

The previous prime is 86138453. The next prime is 86138489. The reversal of 86138487 is 78483168.

It is not a de Polignac number, because 86138487 - 2⁷ = 86138359 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86138489) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4785463 + ... + 4785480.

Almost surely, 2^86138487 is an apocalyptic number.

86138487 is a deficient number, since it is larger than the sum of its proper divisors (38283785).

86138487 is a wasteful number, since it uses less digits than its factorization.

86138487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9570949 (or 9570946 counting only the distinct ones).

The product of its digits is 258048, while the sum is 45.

The square root of 86138487 is about 9281.0822106045. The cubic root of 86138487 is about 441.6373003061.

The spelling of 86138487 in words is "eighty-six million, one hundred thirty-eight thousand, four hundred eighty-seven".