709489 has 4 divisors (see below), whose sum is σ = 774000. Its totient is φ = 644980.

The previous prime is 709469. The next prime is 709507. The reversal of 709489 is 984907.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 709489 - 2¹⁵ = 676721 is a prime.

It is a super-2 number, since 2×709489² = 1006749282242, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (709409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32239 + ... + 32260.

It is an arithmetic number, because the mean of its divisors is an integer number (193500).

2⁷⁰⁹⁴⁸⁹ is an apocalyptic number.

It is an amenable number.

709489 is a deficient number, since it is larger than the sum of its proper divisors (64511).

709489 is a wasteful number, since it uses less digits than its factorization.

709489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64510.

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

The square root of 709489 is about 842.3117000256. The cubic root of 709489 is about 89.1898065932.

It can be divided in two parts, 70 and 9489, that added together give a palindrome (9559).

The spelling of 709489 in words is "seven hundred nine thousand, four hundred eighty-nine".