9988949 has 2 divisors, whose sum is σ = 9988950. Its totient is φ = 9988948.

The previous prime is 9988939. The next prime is 9988973. The reversal of 9988949 is 9498899.

9988949 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., 7524049 + 2464900 = 2743^2 + 1570^2 .

It is a cyclic number.

It is not a de Polignac number, because 9988949 - 2¹⁶ = 9923413 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 9988894 and 9988903.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9988939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4994474 + 4994475.

It is an arithmetic number, because the mean of its divisors is an integer number (4994475).

Almost surely, 2^9988949 is an apocalyptic number.

It is an amenable number.

9988949 is a deficient number, since it is larger than the sum of its proper divisors (1).

9988949 is an equidigital number, since it uses as much as digits as its factorization.

9988949 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 9988949 is about 3160.5298606405. The cubic root of 9988949 is about 215.3640775583.

The spelling of 9988949 in words is "nine million, nine hundred eighty-eight thousand, nine hundred forty-nine".