789138 has 24 divisors (see below), whose sum is σ = 1954368. Its totient is φ = 225432.

The previous prime is 789137. The next prime is 789149. The reversal of 789138 is 831987.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (789133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3006 + ... + 3257.

It is an arithmetic number, because the mean of its divisors is an integer number (81432).

2⁷⁸⁹¹³⁸ is an apocalyptic number.

789138 is an abundant number, since it is smaller than the sum of its proper divisors (1165230).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

789138 is a wasteful number, since it uses less digits than its factorization.

789138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6278 (or 6275 counting only the distinct ones).

The product of its digits is 12096, while the sum is 36.

The square root of 789138 is about 888.3343964972. The cubic root of 789138 is about 92.4097195600.

Subtracting 789138 from its reverse (831987), we obtain a square (42849 = 207²).

It can be divided in two parts, 78 and 9138, that added together give a square (9216 = 96²).

The spelling of 789138 in words is "seven hundred eighty-nine thousand, one hundred thirty-eight".