789479399510221 has 8 divisors (see below), whose sum is σ = 902266365667520. Its totient is φ = 676693482052608.

The previous prime is 789479399510177. The next prime is 789479399510227. The reversal of 789479399510221 is 122015993974987.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-789479399510221 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (789479399510227) 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, 260561076 + ... + 263573581.

It is an arithmetic number, because the mean of its divisors is an integer number (112783295708440).

Almost surely, 2^{789479399510221} is an apocalyptic number.

It is an amenable number.

789479399510221 is a deficient number, since it is larger than the sum of its proper divisors (112786966157299).

789479399510221 is a wasteful number, since it uses less digits than its factorization.

789479399510221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 524349843.

The product of its (nonzero) digits is 617258880, while the sum is 76.

The spelling of 789479399510221 in words is "seven hundred eighty-nine trillion, four hundred seventy-nine billion, three hundred ninety-nine million, five hundred ten thousand, two hundred twenty-one".