9984739 has 2 divisors, whose sum is σ = 9984740. Its totient is φ = 9984738.

The previous prime is 9984713. The next prime is 9984743. The reversal of 9984739 is 9374899.

9984739 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 9984739 - 2¹⁷ = 9853667 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 9984692 and 9984701.

It is not a weakly prime, because it can be changed into another prime (9984769) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4992369 + 4992370.

It is an arithmetic number, because the mean of its divisors is an integer number (4992370).

Almost surely, 2^9984739 is an apocalyptic number.

9984739 is a deficient number, since it is larger than the sum of its proper divisors (1).

9984739 is an equidigital number, since it uses as much as digits as its factorization.

9984739 is an evil number, because the sum of its binary digits is even.

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

The square root of 9984739 is about 3159.8637628860. The cubic root of 9984739 is about 215.3338171117. Note that the first 3 decimals are identical.

The spelling of 9984739 in words is "nine million, nine hundred eighty-four thousand, seven hundred thirty-nine".