86729949 has 12 divisors (see below), whose sum is σ = 125357596. Its totient is φ = 57782592.

The previous prime is 86729939. The next prime is 86729953. The reversal of 86729949 is 94992768.

It can be written as a sum of positive squares in 2 ways, for example, as 76212900 + 10517049 = 8730^2 + 3243^2 .

It is not a de Polignac number, because 86729949 - 2⁷ = 86729821 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 86729895 and 86729904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86729939) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24027 + ... + 27399.

Almost surely, 2^86729949 is an apocalyptic number.

It is an amenable number.

86729949 is a deficient number, since it is larger than the sum of its proper divisors (38627647).

86729949 is a wasteful number, since it uses less digits than its factorization.

86729949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6236 (or 6233 counting only the distinct ones).

The product of its digits is 1959552, while the sum is 54.

The square root of 86729949 is about 9312.8915488155. The cubic root of 86729949 is about 442.6458161595.

It can be divided in two parts, 86729 and 949, that added together give a palindrome (87678).

The spelling of 86729949 in words is "eighty-six million, seven hundred twenty-nine thousand, nine hundred forty-nine".