9920493 has 12 divisors (see below), whose sum is σ = 15632448. Its totient is φ = 6012360.

The previous prime is 9920479. The next prime is 9920501. The reversal of 9920493 is 3940299.

It is a de Polignac number, because none of the positive numbers 2^k-9920493 is a prime.

It is a Curzon number.

9920493 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9920423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 50005 + ... + 50202.

It is an arithmetic number, because the mean of its divisors is an integer number (1302704).

Almost surely, 2^9920493 is an apocalyptic number.

It is an amenable number.

9920493 is a deficient number, since it is larger than the sum of its proper divisors (5711955).

9920493 is a wasteful number, since it uses less digits than its factorization.

9920493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100224 (or 100221 counting only the distinct ones).

The product of its (nonzero) digits is 17496, while the sum is 36.

The square root of 9920493 is about 3149.6814124606. The cubic root of 9920493 is about 214.8709736024.

The spelling of 9920493 in words is "nine million, nine hundred twenty thousand, four hundred ninety-three".