8743993478 has 8 divisors (see below), whose sum is σ = 14308353000. Its totient is φ = 3974542480.

The previous prime is 8743993457. The next prime is 8743993481.

8743993478 is nontrivially palindromic in base 10.

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

It is a self number, because there is not a number n which added to its sum of digits gives 8743993478.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 198727103 + ... + 198727146.

It is an arithmetic number, because the mean of its divisors is an integer number (1788544125).

Almost surely, 2^8743993478 is an apocalyptic number.

8743993478 is a deficient number, since it is larger than the sum of its proper divisors (5564359522).

8743993478 is a wasteful number, since it uses less digits than its factorization.

8743993478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 397454262.

The product of its digits is 36578304, while the sum is 62.

The square root of 8743993478 is about 93509.3229469661. The cubic root of 8743993478 is about 2060.1710259552.

The spelling of 8743993478 in words is "eight billion, seven hundred forty-three million, nine hundred ninety-three thousand, four hundred seventy-eight".