86478511349 has 4 divisors (see below), whose sum is σ = 86485502880. Its totient is φ = 86471519820.

The previous prime is 86478511333. The next prime is 86478511373. The reversal of 86478511349 is 94311587468.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 86478511349 - 2⁴ = 86478511333 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 86478511294 and 86478511303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86478511309) 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 3 ways as a sum of consecutive naturals, for example, 3477179 + ... + 3501960.

It is an arithmetic number, because the mean of its divisors is an integer number (21621375720).

Almost surely, 2^86478511349 is an apocalyptic number.

It is an amenable number.

86478511349 is a deficient number, since it is larger than the sum of its proper divisors (6991531).

86478511349 is a wasteful number, since it uses less digits than its factorization.

86478511349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6991530.

The product of its digits is 5806080, while the sum is 56.

The spelling of 86478511349 in words is "eighty-six billion, four hundred seventy-eight million, five hundred eleven thousand, three hundred forty-nine".