9213993 has 20 divisors (see below), whose sum is σ = 14490960. Its totient is φ = 5818392.

The previous prime is 9213979. The next prime is 9214001. The reversal of 9213993 is 3993129.

It is not a de Polignac number, because 9213993 - 2¹² = 9209897 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (9213923) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1455 + ... + 4532.

It is an arithmetic number, because the mean of its divisors is an integer number (724548).

Almost surely, 2^9213993 is an apocalyptic number.

It is an amenable number.

9213993 is a deficient number, since it is larger than the sum of its proper divisors (5276967).

9213993 is a wasteful number, since it uses less digits than its factorization.

9213993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6018 (or 6009 counting only the distinct ones).

The product of its digits is 13122, while the sum is 36.

The square root of 9213993 is about 3035.4559789264. The cubic root of 9213993 is about 209.6440910221.

The spelling of 9213993 in words is "nine million, two hundred thirteen thousand, nine hundred ninety-three".