711949 has 16 divisors (see below), whose sum is σ = 881280. Its totient is φ = 561600.

The previous prime is 711947. The next prime is 711959. The reversal of 711949 is 949117.

It is a cyclic number.

It is not a de Polignac number, because 711949 - 2¹ = 711947 is a prime.

It is a Duffinian number.

711949 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 711949.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (711947) 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 15 ways as a sum of consecutive naturals, for example, 6999 + ... + 7099.

It is an arithmetic number, because the mean of its divisors is an integer number (55080).

2⁷¹¹⁹⁴⁹ is an apocalyptic number.

It is an amenable number.

711949 is a deficient number, since it is larger than the sum of its proper divisors (169331).

711949 is a wasteful number, since it uses less digits than its factorization.

711949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180.

The product of its digits is 2268, while the sum is 31.

The square root of 711949 is about 843.7707034497. The cubic root of 711949 is about 89.2927698196.

The spelling of 711949 in words is "seven hundred eleven thousand, nine hundred forty-nine".