712389 has 8 divisors (see below), whose sum is σ = 961632. Its totient is φ = 469040.

The previous prime is 712357. The next prime is 712409. The reversal of 712389 is 983217.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 712389 - 2⁵ = 712357 is a prime.

It is a Curzon number.

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (712319) 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, 1182 + ... + 1679.

It is an arithmetic number, because the mean of its divisors is an integer number (120204).

2⁷¹²³⁸⁹ is an apocalyptic number.

It is an amenable number.

712389 is a deficient number, since it is larger than the sum of its proper divisors (249243).

712389 is a wasteful number, since it uses less digits than its factorization.

712389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2947.

The product of its digits is 3024, while the sum is 30.

The square root of 712389 is about 844.0313975203. The cubic root of 712389 is about 89.3111609907.

The spelling of 712389 in words is "seven hundred twelve thousand, three hundred eighty-nine".