86511139 has 8 divisors (see below), whose sum is σ = 101635632. Its totient is φ = 72596640.

The previous prime is 86511133. The next prime is 86511151. The reversal of 86511139 is 93111568.

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 86511139 - 2¹³ = 86502947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86511133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 302344 + ... + 302629.

It is an arithmetic number, because the mean of its divisors is an integer number (12704454).

Almost surely, 2^86511139 is an apocalyptic number.

86511139 is a deficient number, since it is larger than the sum of its proper divisors (15124493).

86511139 is a wasteful number, since it uses less digits than its factorization.

86511139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 604997.

The product of its digits is 6480, while the sum is 34.

The square root of 86511139 is about 9301.1364359416. The cubic root of 86511139 is about 442.2732539775.

It can be divided in two parts, 86 and 511139, that added together give a square (511225 = 715²).

The spelling of 86511139 in words is "eighty-six million, five hundred eleven thousand, one hundred thirty-nine".