9948989 has 4 divisors (see below), whose sum is σ = 10472640. Its totient is φ = 9425340.

The previous prime is 9948979. The next prime is 9949021. The reversal of 9948989 is 9898499.

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 9948989 - 2⁴ = 9948973 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 (9948979) 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, 261797 + ... + 261834.

It is an arithmetic number, because the mean of its divisors is an integer number (2618160).

Almost surely, 2^9948989 is an apocalyptic number.

It is an amenable number.

9948989 is a deficient number, since it is larger than the sum of its proper divisors (523651).

9948989 is a wasteful number, since it uses less digits than its factorization.

9948989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 523650.

The product of its digits is 1679616, while the sum is 56.

The square root of 9948989 is about 3154.2018007731. The cubic root of 9948989 is about 215.0765114384.

The spelling of 9948989 in words is "nine million, nine hundred forty-eight thousand, nine hundred eighty-nine".