789401244638 has 8 divisors (see below), whose sum is σ = 1216104620232. Its totient is φ = 384033037896.

The previous prime is 789401244571. The next prime is 789401244659. The reversal of 789401244638 is 836442104987.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5333792120 + ... + 5333792267.

It is an arithmetic number, because the mean of its divisors is an integer number (152013077529).

Almost surely, 2^789401244638 is an apocalyptic number.

789401244638 is a deficient number, since it is larger than the sum of its proper divisors (426703375594).

789401244638 is a wasteful number, since it uses less digits than its factorization.

789401244638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10667584426.

The product of its (nonzero) digits is 9289728, while the sum is 56.

The spelling of 789401244638 in words is "seven hundred eighty-nine billion, four hundred one million, two hundred forty-four thousand, six hundred thirty-eight".