9989913 has 8 divisors (see below), whose sum is σ = 13507776. Its totient is φ = 6566000.

The previous prime is 9989899. The next prime is 9989921. The reversal of 9989913 is 3199899.

9989913 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 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 9989913 - 2⁶ = 9989849 is a prime.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (9989923) 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, 23238 + ... + 23663.

It is an arithmetic number, because the mean of its divisors is an integer number (1688472).

Almost surely, 2^9989913 is an apocalyptic number.

It is an amenable number.

9989913 is a deficient number, since it is larger than the sum of its proper divisors (3517863).

9989913 is a wasteful number, since it uses less digits than its factorization.

9989913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46975.

The product of its digits is 157464, while the sum is 48.

The square root of 9989913 is about 3160.6823630349. The cubic root of 9989913 is about 215.3710053573.

The spelling of 9989913 in words is "nine million, nine hundred eighty-nine thousand, nine hundred thirteen".