9993545 has 16 divisors (see below), whose sum is σ = 12715920. Its totient is φ = 7530880.

The previous prime is 9993541. The next prime is 9993551. The reversal of 9993545 is 5453999.

9993545 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 9265936 + 727609 = 3044^2 + 853^2 .

It is not a de Polignac number, because 9993545 - 2² = 9993541 is a prime.

Its product of digits (218700) is a multiple of the sum of its prime divisors (75).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 9993496 and 9993505.

It is not an unprimeable number, because it can be changed into a prime (9993541) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 243725 + ... + 243765.

It is an arithmetic number, because the mean of its divisors is an integer number (794745).

Almost surely, 2^9993545 is an apocalyptic number.

It is an amenable number.

9993545 is a deficient number, since it is larger than the sum of its proper divisors (2722375).

9993545 is an frugal number, since it uses more digits than its factorization.

9993545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157 (or 75 counting only the distinct ones).

The product of its digits is 218700, while the sum is 44.

The square root of 9993545 is about 3161.2568702970. The cubic root of 9993545 is about 215.3971027722.

The spelling of 9993545 in words is "nine million, nine hundred ninety-three thousand, five hundred forty-five".