86129791 has 8 divisors (see below), whose sum is σ = 94050000. Its totient is φ = 78224640.

The previous prime is 86129789. The next prime is 86129801. The reversal of 86129791 is 19792168.

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 86129791 - 2¹ = 86129789 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86129741) 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, 10605 + ... + 16873.

It is an arithmetic number, because the mean of its divisors is an integer number (11756250).

Almost surely, 2^86129791 is an apocalyptic number.

86129791 is a deficient number, since it is larger than the sum of its proper divisors (7920209).

86129791 is a wasteful number, since it uses less digits than its factorization.

86129791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7529.

The product of its digits is 54432, while the sum is 43.

The square root of 86129791 is about 9280.6137189304. The cubic root of 86129791 is about 441.6224381644.

The spelling of 86129791 in words is "eighty-six million, one hundred twenty-nine thousand, seven hundred ninety-one".