9985424 has 10 divisors (see below), whose sum is σ = 19346790. Its totient is φ = 4992704.

The previous prime is 9985421. The next prime is 9985429. The reversal of 9985424 is 4245899.

It can be written as a sum of positive squares in only one way, i.e., 5856400 + 4129024 = 2420^2 + 2032^2 .

It is not an unprimeable number, because it can be changed into a prime (9985421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 312029 + ... + 312060.

It is an arithmetic number, because the mean of its divisors is an integer number (1934679).

Almost surely, 2^9985424 is an apocalyptic number.

It is an amenable number.

9985424 is a deficient number, since it is larger than the sum of its proper divisors (9361366).

9985424 is a wasteful number, since it uses less digits than its factorization.

9985424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 624097 (or 624091 counting only the distinct ones).

The product of its digits is 103680, while the sum is 41.

The square root of 9985424 is about 3159.9721517760. The cubic root of 9985424 is about 215.3387413029.

The spelling of 9985424 in words is "nine million, nine hundred eighty-five thousand, four hundred twenty-four".