9803993 has 8 divisors (see below), whose sum is σ = 10083528. Its totient is φ = 9528064.

The previous prime is 9803987. The next prime is 9803999. The reversal of 9803993 is 3993089.

9803993 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (9803987) and next prime (9803999).

It can be written as a sum of positive squares in 4 ways, for example, as 150544 + 9653449 = 388^2 + 3107^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 9803993 - 2⁶ = 9803929 is a prime.

It is a super-2 number, since 2×9803993² = 192236557488098, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 9803993.

It is not an unprimeable number, because it can be changed into a prime (9803999) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5171 + ... + 6807.

It is an arithmetic number, because the mean of its divisors is an integer number (1260441).

Almost surely, 2^9803993 is an apocalyptic number.

It is an amenable number.

9803993 is a deficient number, since it is larger than the sum of its proper divisors (279535).

9803993 is a wasteful number, since it uses less digits than its factorization.

9803993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1803.

The product of its (nonzero) digits is 52488, while the sum is 41.

The square root of 9803993 is about 3131.1328620804. The cubic root of 9803993 is about 214.0265565203.

It can be divided in two parts, 9803 and 993, that multiplied together give a palindrome (9734379).

The spelling of 9803993 in words is "nine million, eight hundred three thousand, nine hundred ninety-three".