9913863 has 8 divisors (see below), whose sum is σ = 13248000. Its totient is φ = 6594488.

The previous prime is 9913861. The next prime is 9913879. The reversal of 9913863 is 3683199.

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 9913863 - 2¹ = 9913861 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9913861) 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 7 ways as a sum of consecutive naturals, for example, 2013 + ... + 4886.

It is an arithmetic number, because the mean of its divisors is an integer number (1656000).

Almost surely, 2^9913863 is an apocalyptic number.

9913863 is a deficient number, since it is larger than the sum of its proper divisors (3334137).

9913863 is a wasteful number, since it uses less digits than its factorization.

9913863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7381.

The product of its digits is 34992, while the sum is 39.

The square root of 9913863 is about 3148.6287491541. The cubic root of 9913863 is about 214.8230958732.

The spelling of 9913863 in words is "nine million, nine hundred thirteen thousand, eight hundred sixty-three".