86484978 has 24 divisors (see below), whose sum is σ = 193430016. Its totient is φ = 27898200.

The previous prime is 86484977. The next prime is 86485067. The reversal of 86484978 is 87948468.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (86484971) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 76938 + ... + 78053.

It is an arithmetic number, because the mean of its divisors is an integer number (8059584).

Almost surely, 2^86484978 is an apocalyptic number.

86484978 is an abundant number, since it is smaller than the sum of its proper divisors (106945038).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

86484978 is a wasteful number, since it uses less digits than its factorization.

86484978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155030 (or 155027 counting only the distinct ones).

The product of its digits is 3096576, while the sum is 54.

The square root of 86484978 is about 9299.7299960805. The cubic root of 86484978 is about 442.2286682852.

The spelling of 86484978 in words is "eighty-six million, four hundred eighty-four thousand, nine hundred seventy-eight".