9900913 has 8 divisors (see below), whose sum is σ = 10827936. Its totient is φ = 8978400.

The previous prime is 9900907. The next prime is 9900923. The reversal of 9900913 is 3190099.

9900913 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9900913 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9900923) 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, 4893 + ... + 6613.

It is an arithmetic number, because the mean of its divisors is an integer number (1353492).

Almost surely, 2^9900913 is an apocalyptic number.

It is an amenable number.

9900913 is a deficient number, since it is larger than the sum of its proper divisors (927023).

9900913 is a wasteful number, since it uses less digits than its factorization.

9900913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2255.

The product of its (nonzero) digits is 2187, while the sum is 31.

The square root of 9900913 is about 3146.5716263896. The cubic root of 9900913 is about 214.7295174405.

The spelling of 9900913 in words is "nine million, nine hundred thousand, nine hundred thirteen".