9993541 has 2 divisors, whose sum is σ = 9993542. Its totient is φ = 9993540.

The previous prime is 9993539. The next prime is 9993551. The reversal of 9993541 is 1453999.

9993541 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9431041 + 562500 = 3071^2 + 750^2 .

It is a cyclic number.

It is not a de Polignac number, because 9993541 - 2¹ = 9993539 is a prime.

Together with 9993539, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 9993494 and 9993503.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9993551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4996770 + 4996771.

It is an arithmetic number, because the mean of its divisors is an integer number (4996771).

Almost surely, 2^9993541 is an apocalyptic number.

It is an amenable number.

9993541 is a deficient number, since it is larger than the sum of its proper divisors (1).

9993541 is an equidigital number, since it uses as much as digits as its factorization.

9993541 is an evil number, because the sum of its binary digits is even.

The product of its digits is 43740, while the sum is 40.

The square root of 9993541 is about 3161.2562376372. The cubic root of 9993541 is about 215.3970740340.

The spelling of 9993541 in words is "nine million, nine hundred ninety-three thousand, five hundred forty-one".