86912709 has 8 divisors (see below), whose sum is σ = 124797792. Its totient is φ = 53484720.

The previous prime is 86912671. The next prime is 86912711. The reversal of 86912709 is 90721968.

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

It is not a de Polignac number, because 86912709 - 2⁸ = 86912453 is a prime.

It is a super-3 number, since 3×86912709³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86912759) 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, 1114227 + ... + 1114304.

It is an arithmetic number, because the mean of its divisors is an integer number (15599724).

Almost surely, 2^86912709 is an apocalyptic number.

It is an amenable number.

86912709 is a deficient number, since it is larger than the sum of its proper divisors (37885083).

86912709 is a wasteful number, since it uses less digits than its factorization.

86912709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2228547.

The product of its (nonzero) digits is 54432, while the sum is 42.

The square root of 86912709 is about 9322.6985900006. The cubic root of 86912709 is about 442.9565169542.

The spelling of 86912709 in words is "eighty-six million, nine hundred twelve thousand, seven hundred nine".