7247489 has 4 divisors (see below), whose sum is σ = 7289556. Its totient is φ = 7205424.

The previous prime is 7247479. The next prime is 7247497. The reversal of 7247489 is 9847427.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9847427 = 23 ⋅428149.

It can be written as a sum of positive squares in 2 ways, for example, as 6553600 + 693889 = 2560^2 + 833^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7247489 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (7247479) 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, 20774 + ... + 21119.

It is an arithmetic number, because the mean of its divisors is an integer number (1822389).

Almost surely, 2^7247489 is an apocalyptic number.

It is an amenable number.

7247489 is a deficient number, since it is larger than the sum of its proper divisors (42067).

7247489 is a wasteful number, since it uses less digits than its factorization.

7247489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42066.

The product of its digits is 112896, while the sum is 41.

The square root of 7247489 is about 2692.1160821926. The cubic root of 7247489 is about 193.5214851496.

The spelling of 7247489 in words is "seven million, two hundred forty-seven thousand, four hundred eighty-nine".