9890424 has 40 divisors (see below), whose sum is σ = 27704160. Its totient is φ = 3296592.

The previous prime is 9890423. The next prime is 9890429. The reversal of 9890424 is 4240989.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9890423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 6984 + ... + 8279.

It is an arithmetic number, because the mean of its divisors is an integer number (692604).

Almost surely, 2^9890424 is an apocalyptic number.

It is an amenable number.

9890424 is an abundant number, since it is smaller than the sum of its proper divisors (17813736).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9890424 is a wasteful number, since it uses less digits than its factorization.

9890424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15281 (or 15268 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 9890424 is about 3144.9044500589. The cubic root of 9890424 is about 214.6536626940.

The spelling of 9890424 in words is "nine million, eight hundred ninety thousand, four hundred twenty-four".