7319989 has 4 divisors (see below), whose sum is σ = 7458156. Its totient is φ = 7181824.

The previous prime is 7319987. The next prime is 7320011. The reversal of 7319989 is 9899137.

7319989 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9899137 = 31 ⋅319327.

It can be written as a sum of positive squares in 2 ways, for example, as 3960100 + 3359889 = 1990^2 + 1833^2 .

It is a cyclic number.

It is not a de Polignac number, because 7319989 - 2¹ = 7319987 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7319987) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69004 + ... + 69109.

It is an arithmetic number, because the mean of its divisors is an integer number (1864539).

Almost surely, 2^7319989 is an apocalyptic number.

It is an amenable number.

7319989 is a deficient number, since it is larger than the sum of its proper divisors (138167).

7319989 is a wasteful number, since it uses less digits than its factorization.

7319989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138166.

The product of its digits is 122472, while the sum is 46.

The square root of 7319989 is about 2705.5478188345. The cubic root of 7319989 is about 194.1646404114.

The spelling of 7319989 in words is "seven million, three hundred nineteen thousand, nine hundred eighty-nine".