86447479 has 4 divisors (see below), whose sum is σ = 86473000. Its totient is φ = 86421960.

The previous prime is 86447461. The next prime is 86447489. The reversal of 86447479 is 97474468.

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 86447479 - 2⁵ = 86447447 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86447419) 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, 6729 + ... + 14770.

It is an arithmetic number, because the mean of its divisors is an integer number (21618250).

Almost surely, 2^86447479 is an apocalyptic number.

86447479 is a deficient number, since it is larger than the sum of its proper divisors (25521).

86447479 is a wasteful number, since it uses less digits than its factorization.

86447479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25520.

The product of its digits is 1354752, while the sum is 49.

The square root of 86447479 is about 9297.7136436868. The cubic root of 86447479 is about 442.1647437727.

The spelling of 86447479 in words is "eighty-six million, four hundred forty-seven thousand, four hundred seventy-nine".