893894778947 has 8 divisors (see below), whose sum is σ = 935157618720. Its totient is φ = 852831760000.

The previous prime is 893894778937. The next prime is 893894778967. The reversal of 893894778947 is 749877498398.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 893894778947 - 2¹⁸ = 893894516803 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (893894778937) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49946054 + ... + 49963947.

It is an arithmetic number, because the mean of its divisors is an integer number (116894702340).

Almost surely, 2^893894778947 is an apocalyptic number.

893894778947 is a deficient number, since it is larger than the sum of its proper divisors (41262839773).

893894778947 is a wasteful number, since it uses less digits than its factorization.

893894778947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99910413.

The product of its digits is 6145155072, while the sum is 83.

The spelling of 893894778947 in words is "eight hundred ninety-three billion, eight hundred ninety-four million, seven hundred seventy-eight thousand, nine hundred forty-seven".