9949889 has 2 divisors, whose sum is σ = 9949890. Its totient is φ = 9949888.

The previous prime is 9949883. The next prime is 9949909. The reversal of 9949889 is 9889499.

9949889 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9610000 + 339889 = 3100^2 + 583^2 .

It is a cyclic number.

It is not a de Polignac number, because 9949889 - 2⁴ = 9949873 is a prime.

It is a super-2 number, since 2×9949889² = 198000582224642, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (9949883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4974944 + 4974945.

It is an arithmetic number, because the mean of its divisors is an integer number (4974945).

Almost surely, 2^9949889 is an apocalyptic number.

It is an amenable number.

9949889 is a deficient number, since it is larger than the sum of its proper divisors (1).

9949889 is an equidigital number, since it uses as much as digits as its factorization.

9949889 is an evil number, because the sum of its binary digits is even.

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

The square root of 9949889 is about 3154.3444643856. The cubic root of 9949889 is about 215.0829966208.

The spelling of 9949889 in words is "nine million, nine hundred forty-nine thousand, eight hundred eighty-nine".