789943654389 has 16 divisors (see below), whose sum is σ = 1081750292480. Its totient is φ = 512383734720.

The previous prime is 789943654361. The next prime is 789943654403. The reversal of 789943654389 is 983456349987.

It is not a de Polignac number, because 789943654389 - 2³¹ = 787796170741 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 789943654389.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (789943654309) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9178047 + ... + 9263715.

It is an arithmetic number, because the mean of its divisors is an integer number (67609393280).

Almost surely, 2^789943654389 is an apocalyptic number.

It is an amenable number.

789943654389 is a deficient number, since it is larger than the sum of its proper divisors (291806638091).

789943654389 is a wasteful number, since it uses less digits than its factorization.

789943654389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168780.

The product of its digits is 1410877440, while the sum is 75.

The spelling of 789943654389 in words is "seven hundred eighty-nine billion, nine hundred forty-three million, six hundred fifty-four thousand, three hundred eighty-nine".