709940 has 48 divisors (see below), whose sum is σ = 1862784. Its totient is φ = 220800.

The previous prime is 709927. The next prime is 709957. The reversal of 709940 is 49907.

709940 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (29) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1310 + ... + 1770.

It is an arithmetic number, because the mean of its divisors is an integer number (38808).

2⁷⁰⁹⁹⁴⁰ is an apocalyptic number.

709940 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 709940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (931392).

709940 is an abundant number, since it is smaller than the sum of its proper divisors (1152844).

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

709940 is a wasteful number, since it uses less digits than its factorization.

709940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 488 (or 486 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 29.

The square root of 709940 is about 842.5793731157. The cubic root of 709940 is about 89.2087009818.

The spelling of 709940 in words is "seven hundred nine thousand, nine hundred forty".