84430478 has 8 divisors (see below), whose sum is σ = 138159000. Its totient is φ = 38377480.

The previous prime is 84430459. The next prime is 84430499. The reversal of 84430478 is 87403448.

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

It is a congruent number.

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, 1918853 + ... + 1918896.

It is an arithmetic number, because the mean of its divisors is an integer number (17269875).

Almost surely, 2^84430478 is an apocalyptic number.

84430478 is a deficient number, since it is larger than the sum of its proper divisors (53728522).

84430478 is a wasteful number, since it uses less digits than its factorization.

84430478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3837762.

The product of its (nonzero) digits is 86016, while the sum is 38.

The square root of 84430478 is about 9188.6058790221. The cubic root of 84430478 is about 438.6987692447.

The spelling of 84430478 in words is "eighty-four million, four hundred thirty thousand, four hundred seventy-eight".