709091 has 4 divisors (see below), whose sum is σ = 714000. Its totient is φ = 704184.

The previous prime is 709057. The next prime is 709097. The reversal of 709091 is 190907.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 709091 - 2¹⁴ = 692707 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 709091.

It is not an unprimeable number, because it can be changed into a prime (709097) 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, 2231 + ... + 2528.

It is an arithmetic number, because the mean of its divisors is an integer number (178500).

2⁷⁰⁹⁰⁹¹ is an apocalyptic number.

709091 is a deficient number, since it is larger than the sum of its proper divisors (4909).

709091 is a wasteful number, since it uses less digits than its factorization.

709091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4908.

The product of its (nonzero) digits is 567, while the sum is 26.

The square root of 709091 is about 842.0754122999. The cubic root of 709091 is about 89.1731259575.

Adding to 709091 its reverse (190907), we get a palindrome (899998).

The spelling of 709091 in words is "seven hundred nine thousand, ninety-one".