86478311 has 4 divisors (see below), whose sum is σ = 87271800. Its totient is φ = 85684824.

The previous prime is 86478277. The next prime is 86478317. The reversal of 86478311 is 11387468.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-86478311 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 (86478317) 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, 396581 + ... + 396798.

It is an arithmetic number, because the mean of its divisors is an integer number (21817950).

Almost surely, 2^86478311 is an apocalyptic number.

86478311 is a deficient number, since it is larger than the sum of its proper divisors (793489).

86478311 is a wasteful number, since it uses less digits than its factorization.

86478311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 793488.

The product of its digits is 32256, while the sum is 38.

The square root of 86478311 is about 9299.3715379051. The cubic root of 86478311 is about 442.2173044069.

The spelling of 86478311 in words is "eighty-six million, four hundred seventy-eight thousand, three hundred eleven".