86941729 has 6 divisors (see below), whose sum is σ = 101136354. Its totient is φ = 74521440.

The previous prime is 86941693. The next prime is 86941741. The reversal of 86941729 is 92714968.

It can be written as a sum of positive squares in only one way, i.e., 63680400 + 23261329 = 7980^2 + 4823^2 .

It is not a de Polignac number, because 86941729 - 2¹¹ = 86939681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86941529) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 887112 + ... + 887209.

It is an arithmetic number, because the mean of its divisors is an integer number (16856059).

Almost surely, 2^86941729 is an apocalyptic number.

It is an amenable number.

86941729 is a deficient number, since it is larger than the sum of its proper divisors (14194625).

86941729 is a wasteful number, since it uses less digits than its factorization.

86941729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1774335 (or 1774328 counting only the distinct ones).

The product of its digits is 217728, while the sum is 46.

The square root of 86941729 is about 9324.2548763963. The cubic root of 86941729 is about 443.0058122676.

The spelling of 86941729 in words is "eighty-six million, nine hundred forty-one thousand, seven hundred twenty-nine".