794007021987 has 48 divisors (see below), whose sum is σ = 1266298985952. Its totient is φ = 495447528960.

The previous prime is 794007021967. The next prime is 794007021989. The reversal of 794007021987 is 789120700497.

794007021987 is a `hidden beast` number, since 79 + 400 + 70 + 21 + 9 + 87 = 666.

794007021987 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-794007021987 is a prime.

It is not an unprimeable number, because it can be changed into a prime (794007021989) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 216753 + ... + 1278669.

It is an arithmetic number, because the mean of its divisors is an integer number (26381228874).

Almost surely, 2^794007021987 is an apocalyptic number.

794007021987 is a deficient number, since it is larger than the sum of its proper divisors (472291963965).

794007021987 is a wasteful number, since it uses less digits than its factorization.

794007021987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1062130 (or 1062118 counting only the distinct ones).

The product of its (nonzero) digits is 1778112, while the sum is 54.

The spelling of 794007021987 in words is "seven hundred ninety-four billion, seven million, twenty-one thousand, nine hundred eighty-seven".