7143489 has 6 divisors (see below), whose sum is σ = 10318386. Its totient is φ = 4762320.

The previous prime is 7143469. The next prime is 7143491. The reversal of 7143489 is 9843417.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 6969600 + 173889 = 2640^2 + 417^2 .

It is not a de Polignac number, because 7143489 - 2⁵ = 7143457 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7143419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 396852 + ... + 396869.

It is an arithmetic number, because the mean of its divisors is an integer number (1719731).

Almost surely, 2^7143489 is an apocalyptic number.

It is an amenable number.

7143489 is a deficient number, since it is larger than the sum of its proper divisors (3174897).

7143489 is a wasteful number, since it uses less digits than its factorization.

7143489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 793727 (or 793724 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The square root of 7143489 is about 2672.7306261575. The cubic root of 7143489 is about 192.5913570977.

The spelling of 7143489 in words is "seven million, one hundred forty-three thousand, four hundred eighty-nine".