8394221078 has 8 divisors (see below), whose sum is σ = 12591728400. Its totient is φ = 4196978280.

The previous prime is 8394221063. The next prime is 8394221177. The reversal of 8394221078 is 8701224938.

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 (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66023 + ... + 145421.

It is an arithmetic number, because the mean of its divisors is an integer number (1573966050).

Almost surely, 2^8394221078 is an apocalyptic number.

8394221078 is a deficient number, since it is larger than the sum of its proper divisors (4197507322).

8394221078 is a wasteful number, since it uses less digits than its factorization.

8394221078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132262.

The product of its (nonzero) digits is 193536, while the sum is 44.

The square root of 8394221078 is about 91619.9818707688. The cubic root of 8394221078 is about 2032.3264419831.

The spelling of 8394221078 in words is "eight billion, three hundred ninety-four million, two hundred twenty-one thousand, seventy-eight".