7984947 has 8 divisors (see below), whose sum is σ = 11013840. Its totient is φ = 5139680.

The previous prime is 7984939. The next prime is 7984957. The reversal of 7984947 is 7494897.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7984947 - 2³ = 7984939 is a prime.

It is a super-3 number, since 3×7984947³ (a number of 22 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 7984896 and 7984905.

It is not an unprimeable number, because it can be changed into a prime (7984957) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45804 + ... + 45977.

It is an arithmetic number, because the mean of its divisors is an integer number (1376730).

Almost surely, 2^7984947 is an apocalyptic number.

7984947 is a deficient number, since it is larger than the sum of its proper divisors (3028893).

7984947 is a wasteful number, since it uses less digits than its factorization.

7984947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91813.

The product of its digits is 508032, while the sum is 48.

The square root of 7984947 is about 2825.7648522126. The cubic root of 7984947 is about 199.8744795729.

The spelling of 7984947 in words is "seven million, nine hundred eighty-four thousand, nine hundred forty-seven".