9993539 has 2 divisors, whose sum is σ = 9993540. Its totient is φ = 9993538.

The previous prime is 9993527. The next prime is 9993541. The reversal of 9993539 is 9353999.

It is a happy number.

9993539 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 a de Polignac number, because none of the positive numbers 2^k-9993539 is a prime.

Together with 9993541, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 9993493 and 9993502.

It is not a weakly prime, because it can be changed into another prime (9993239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4996769 + 4996770.

It is an arithmetic number, because the mean of its divisors is an integer number (4996770).

Almost surely, 2^9993539 is an apocalyptic number.

9993539 is a deficient number, since it is larger than the sum of its proper divisors (1).

9993539 is an equidigital number, since it uses as much as digits as its factorization.

9993539 is an evil number, because the sum of its binary digits is even.

The product of its digits is 295245, while the sum is 47.

The square root of 9993539 is about 3161.2559213072. The cubic root of 9993539 is about 215.3970596650.

The spelling of 9993539 in words is "nine million, nine hundred ninety-three thousand, five hundred thirty-nine".