84478898 has 8 divisors (see below), whose sum is σ = 144820992. Its totient is φ = 36205236.

The previous prime is 84478843. The next prime is 84478903. The reversal of 84478898 is 89887448.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3017090 + ... + 3017117.

It is an arithmetic number, because the mean of its divisors is an integer number (18102624).

Almost surely, 2^84478898 is an apocalyptic number.

84478898 is a deficient number, since it is larger than the sum of its proper divisors (60342094).

84478898 is a wasteful number, since it uses less digits than its factorization.

84478898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6034216.

The product of its digits is 4128768, while the sum is 56.

The square root of 84478898 is about 9191.2402862726. The cubic root of 84478898 is about 438.7826162770.

The spelling of 84478898 in words is "eighty-four million, four hundred seventy-eight thousand, eight hundred ninety-eight".