994888954478 has 8 divisors (see below), whose sum is σ = 1493075523000. Its totient is φ = 497197113480.

The previous prime is 994888954439. The next prime is 994888954481. The reversal of 994888954478 is 874459888499.

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

It is a junction number, because it is equal to n+sod(n) for n = 994888954396 and 994888954405.

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, 123676853 + ... + 123684896.

It is an arithmetic number, because the mean of its divisors is an integer number (186634440375).

Almost surely, 2^994888954478 is an apocalyptic number.

994888954478 is a deficient number, since it is larger than the sum of its proper divisors (498186568522).

994888954478 is a wasteful number, since it uses less digits than its factorization.

994888954478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247363762.

The product of its digits is 6688604160, while the sum is 83.

The spelling of 994888954478 in words is "nine hundred ninety-four billion, eight hundred eighty-eight million, nine hundred fifty-four thousand, four hundred seventy-eight".