9997803 has 16 divisors (see below), whose sum is σ = 14868000. Its totient is φ = 6639840.

The previous prime is 9997787. The next prime is 9997817. The reversal of 9997803 is 3087999.

It is a happy number.

It is not a de Polignac number, because 9997803 - 2⁴ = 9997787 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9997873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8893 + ... + 9953.

It is an arithmetic number, because the mean of its divisors is an integer number (929250).

Almost surely, 2^9997803 is an apocalyptic number.

9997803 is a deficient number, since it is larger than the sum of its proper divisors (4870197).

9997803 is a wasteful number, since it uses less digits than its factorization.

9997803 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1419 (or 1413 counting only the distinct ones).

The product of its (nonzero) digits is 122472, while the sum is 45.

The square root of 9997803 is about 3161.9302648857. The cubic root of 9997803 is about 215.4276902042.

The spelling of 9997803 in words is "nine million, nine hundred ninety-seven thousand, eight hundred three".