7989473 has 4 divisors (see below), whose sum is σ = 8459460. Its totient is φ = 7519488.

The previous prime is 7989469. The next prime is 7989491. The reversal of 7989473 is 3749897.

7989473 is an esthetic number in base 11, because in such base its adjacent digits differ by 1.

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

It can be written as a sum of positive squares in 2 ways, for example, as 6932689 + 1056784 = 2633^2 + 1028^2 .

It is a cyclic number.

It is not a de Polignac number, because 7989473 - 2² = 7989469 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7989463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 234968 + ... + 235001.

It is an arithmetic number, because the mean of its divisors is an integer number (2114865).

Almost surely, 2^7989473 is an apocalyptic number.

It is an amenable number.

7989473 is a deficient number, since it is larger than the sum of its proper divisors (469987).

7989473 is a wasteful number, since it uses less digits than its factorization.

7989473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 469986.

The product of its digits is 381024, while the sum is 47.

The square root of 7989473 is about 2826.5655838844. The cubic root of 7989473 is about 199.9122364935.

The spelling of 7989473 in words is "seven million, nine hundred eighty-nine thousand, four hundred seventy-three".