86139769 has 8 divisors (see below), whose sum is σ = 87530688. Its totient is φ = 84759600.

The previous prime is 86139751. The next prime is 86139821. The reversal of 86139769 is 96793168.

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

It is a cyclic number.

It is not a de Polignac number, because 86139769 - 2²¹ = 84042617 is a prime.

It is a super-2 number, since 2×86139769² = 14840119606746722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86139719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14314 + ... + 19420.

It is an arithmetic number, because the mean of its divisors is an integer number (10941336).

Almost surely, 2^86139769 is an apocalyptic number.

It is an amenable number.

86139769 is a deficient number, since it is larger than the sum of its proper divisors (1390919).

86139769 is a wasteful number, since it uses less digits than its factorization.

86139769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5375.

The product of its digits is 489888, while the sum is 49.

The square root of 86139769 is about 9281.1512755692. The cubic root of 86139769 is about 441.6394912594.

The spelling of 86139769 in words is "eighty-six million, one hundred thirty-nine thousand, seven hundred sixty-nine".