86919478 has 8 divisors (see below), whose sum is σ = 132215760. Its totient is φ = 42847560.

The previous prime is 86919473. The next prime is 86919479. The reversal of 86919478 is 87491968.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86919473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 305913 + ... + 306196.

It is an arithmetic number, because the mean of its divisors is an integer number (16526970).

Almost surely, 2^86919478 is an apocalyptic number.

86919478 is a deficient number, since it is larger than the sum of its proper divisors (45296282).

86919478 is a wasteful number, since it uses less digits than its factorization.

86919478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 612182.

The product of its digits is 870912, while the sum is 52.

The square root of 86919478 is about 9323.0616215919. The cubic root of 86919478 is about 442.9680162116.

The spelling of 86919478 in words is "eighty-six million, nine hundred nineteen thousand, four hundred seventy-eight".