9993540 has 48 divisors (see below), whose sum is σ = 28159488. Its totient is φ = 2648064.

The previous prime is 9993539. The next prime is 9993541. The reversal of 9993540 is 453999.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (9993539) and next prime (9993541).

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

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11149 + ... + 12011.

It is an arithmetic number, because the mean of its divisors is an integer number (586656).

Almost surely, 2^9993540 is an apocalyptic number.

It is an amenable number.

9993540 is an abundant number, since it is smaller than the sum of its proper divisors (18165948).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9993540 is a wasteful number, since it uses less digits than its factorization.

9993540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1068 (or 1066 counting only the distinct ones).

The product of its (nonzero) digits is 43740, while the sum is 39.

The square root of 9993540 is about 3161.2560794722. The cubic root of 9993540 is about 215.3970668495.

It can be divided in two parts, 99 and 93540, that added together give a palindrome (93639).

The spelling of 9993540 in words is "nine million, nine hundred ninety-three thousand, five hundred forty".