86478451 has 4 divisors (see below), whose sum is σ = 86497632. Its totient is φ = 86459272.

The previous prime is 86478421. The next prime is 86478467. The reversal of 86478451 is 15487468.

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 86478451 - 2⁷ = 86478323 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 86478398 and 86478407.

It is not an unprimeable number, because it can be changed into a prime (86478421) 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, 1281 + ... + 13213.

It is an arithmetic number, because the mean of its divisors is an integer number (21624408).

Almost surely, 2^86478451 is an apocalyptic number.

86478451 is a deficient number, since it is larger than the sum of its proper divisors (19181).

86478451 is a wasteful number, since it uses less digits than its factorization.

86478451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19180.

The product of its digits is 215040, while the sum is 43.

The square root of 86478451 is about 9299.3790652925. The cubic root of 86478451 is about 442.2175430424.

The spelling of 86478451 in words is "eighty-six million, four hundred seventy-eight thousand, four hundred fifty-one".