9900013 has 4 divisors (see below), whose sum is σ = 9965728. Its totient is φ = 9834300.

The previous prime is 9899999. The next prime is 9900047. The reversal of 9900013 is 3100099.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 9900013 - 2⁹ = 9899501 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9900113) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32631 + ... + 32932.

It is an arithmetic number, because the mean of its divisors is an integer number (2491432).

Almost surely, 2^9900013 is an apocalyptic number.

It is an amenable number.

9900013 is a deficient number, since it is larger than the sum of its proper divisors (65715).

9900013 is a wasteful number, since it uses less digits than its factorization.

9900013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65714.

The product of its (nonzero) digits is 243, while the sum is 22.

The square root of 9900013 is about 3146.4286103454. The cubic root of 9900013 is about 214.7230108883.

The spelling of 9900013 in words is "nine million, nine hundred thousand, thirteen".