86729438599 has 4 divisors (see below), whose sum is σ = 86757961680. Its totient is φ = 86700915520.

The previous prime is 86729438591. The next prime is 86729438629. The reversal of 86729438599 is 99583492768.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 86729438599 - 2³ = 86729438591 is a prime.

It is a super-2 number, since 2×86729438599² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86729438591) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14256979 + ... + 14263060.

It is an arithmetic number, because the mean of its divisors is an integer number (21689490420).

Almost surely, 2^86729438599 is an apocalyptic number.

86729438599 is a deficient number, since it is larger than the sum of its proper divisors (28523081).

86729438599 is a wasteful number, since it uses less digits than its factorization.

86729438599 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28523080.

The product of its digits is 235146240, while the sum is 70.

The spelling of 86729438599 in words is "eighty-six billion, seven hundred twenty-nine million, four hundred thirty-eight thousand, five hundred ninety-nine".