789921875 has 16 divisors (see below), whose sum is σ = 987497472. Its totient is φ = 631875000.

The previous prime is 789921871. The next prime is 789921883. The reversal of 789921875 is 578129987.

It is not a de Polignac number, because 789921875 - 2² = 789921871 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 789921875.

It is not an unprimeable number, because it can be changed into a prime (789921871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73070 + ... + 83180.

It is an arithmetic number, because the mean of its divisors is an integer number (61718592).

Almost surely, 2^789921875 is an apocalyptic number.

789921875 is a deficient number, since it is larger than the sum of its proper divisors (197575597).

789921875 is an frugal number, since it uses more digits than its factorization.

789921875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10146 (or 10116 counting only the distinct ones).

The product of its digits is 2540160, while the sum is 56.

The square root of 789921875 is about 28105.5488293682. The cubic root of 789921875 is about 924.4030723808.

The spelling of 789921875 in words is "seven hundred eighty-nine million, nine hundred twenty-one thousand, eight hundred seventy-five".