84327478 has 4 divisors (see below), whose sum is σ = 126491220. Its totient is φ = 42163738.

The previous prime is 84327469. The next prime is 84327479. The reversal of 84327478 is 87472348.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×84327478² = 14222247091680968, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84327479) 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 as a sum of consecutive naturals, namely, 21081868 + ... + 21081871.

It is an arithmetic number, because the mean of its divisors is an integer number (31622805).

Almost surely, 2^84327478 is an apocalyptic number.

84327478 is a deficient number, since it is larger than the sum of its proper divisors (42163742).

84327478 is a wasteful number, since it uses less digits than its factorization.

84327478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42163741.

The product of its digits is 301056, while the sum is 43.

The square root of 84327478 is about 9182.9994010672. Note that the first 3 decimals coincide. The cubic root of 84327478 is about 438.5203014628.

The spelling of 84327478 in words is "eighty-four million, three hundred twenty-seven thousand, four hundred seventy-eight".