86138812 has 24 divisors (see below), whose sum is σ = 155475936. Its totient is φ = 41727168.

The previous prime is 86138809. The next prime is 86138821. The reversal of 86138812 is 21883168.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a congruent number.

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, 37818 + ... + 40030.

It is an arithmetic number, because the mean of its divisors is an integer number (6478164).

Almost surely, 2^86138812 is an apocalyptic number.

It is an amenable number.

86138812 is a deficient number, since it is larger than the sum of its proper divisors (69337124).

86138812 is a wasteful number, since it uses less digits than its factorization.

86138812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2517 (or 2515 counting only the distinct ones).

The product of its digits is 18432, while the sum is 37.

The square root of 86138812 is about 9281.0997193221. The cubic root of 86138812 is about 441.6378557370.

The spelling of 86138812 in words is "eighty-six million, one hundred thirty-eight thousand, eight hundred twelve".