994727097787 has 4 divisors (see below), whose sum is σ = 995343793200. Its totient is φ = 994110402376.

The previous prime is 994727097779. The next prime is 994727097799. The reversal of 994727097787 is 787790727499.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 787790727499 = 43 ⋅18320714593.

It is a cyclic number.

It is not a de Polignac number, because 994727097787 - 2³ = 994727097779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (994727097757) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 308345287 + ... + 308348512.

It is an arithmetic number, because the mean of its divisors is an integer number (248835948300).

Almost surely, 2^994727097787 is an apocalyptic number.

994727097787 is a deficient number, since it is larger than the sum of its proper divisors (616695413).

994727097787 is a wasteful number, since it uses less digits than its factorization.

994727097787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 616695412.

The product of its (nonzero) digits is 784147392, while the sum is 76.

The spelling of 994727097787 in words is "nine hundred ninety-four billion, seven hundred twenty-seven million, ninety-seven thousand, seven hundred eighty-seven".