7984939 has 2 divisors, whose sum is σ = 7984940. Its totient is φ = 7984938.

The previous prime is 7984931. The next prime is 7984957. The reversal of 7984939 is 9394897.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 7984939 - 2³ = 7984931 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 7984892 and 7984901.

It is not a weakly prime, because it can be changed into another prime (7984931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3992469 + 3992470.

It is an arithmetic number, because the mean of its divisors is an integer number (3992470).

Almost surely, 2^7984939 is an apocalyptic number.

7984939 is a deficient number, since it is larger than the sum of its proper divisors (1).

7984939 is an equidigital number, since it uses as much as digits as its factorization.

7984939 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 489888, while the sum is 49.

The square root of 7984939 is about 2825.7634366663. The cubic root of 7984939 is about 199.8744128225.

The spelling of 7984939 in words is "seven million, nine hundred eighty-four thousand, nine hundred thirty-nine".