86979547 has 8 divisors (see below), whose sum is σ = 87639552. Its totient is φ = 86322600.

The previous prime is 86979539. The next prime is 86979569. The reversal of 86979547 is 74597968.

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 86979547 - 2³ = 86979539 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86979577) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 95022 + ... + 95932.

It is an arithmetic number, because the mean of its divisors is an integer number (10954944).

Almost surely, 2^86979547 is an apocalyptic number.

86979547 is a deficient number, since it is larger than the sum of its proper divisors (660005).

86979547 is a wasteful number, since it uses less digits than its factorization.

86979547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1529.

The product of its digits is 3810240, while the sum is 55.

The square root of 86979547 is about 9326.2825927590. The cubic root of 86979547 is about 443.0700359931.

The spelling of 86979547 in words is "eighty-six million, nine hundred seventy-nine thousand, five hundred forty-seven".