789940 has 24 divisors (see below), whose sum is σ = 1677312. Its totient is φ = 312480.

The previous prime is 789883. The next prime is 789941. The reversal of 789940 is 49987.

789940 = T₂₇₁ + T₂₇₂ + ... + T₂₉₀.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 789940.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (789941) 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, 2385 + ... + 2695.

It is an arithmetic number, because the mean of its divisors is an integer number (69888).

2⁷⁸⁹⁹⁴⁰ is an apocalyptic number.

It is an amenable number.

789940 is an abundant number, since it is smaller than the sum of its proper divisors (887372).

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

789940 is a wasteful number, since it uses less digits than its factorization.

789940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 447 (or 445 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 37.

The square root of 789940 is about 888.7856884536. The cubic root of 789940 is about 92.4410142564.

The spelling of 789940 in words is "seven hundred eighty-nine thousand, nine hundred forty".