7223993 has 4 divisors (see below), whose sum is σ = 8256000. Its totient is φ = 6191988.

The previous prime is 7223981. The next prime is 7223999. The reversal of 7223993 is 3993227.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3993227 = 7 ⋅570461.

It is a cyclic number.

It is not a de Polignac number, because 7223993 - 2⁸ = 7223737 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (7223999) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 515993 + ... + 516006.

It is an arithmetic number, because the mean of its divisors is an integer number (2064000).

Almost surely, 2^7223993 is an apocalyptic number.

It is an amenable number.

7223993 is a deficient number, since it is larger than the sum of its proper divisors (1032007).

7223993 is a wasteful number, since it uses less digits than its factorization.

7223993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1032006.

The product of its digits is 20412, while the sum is 35.

The square root of 7223993 is about 2687.7486861684. The cubic root of 7223993 is about 193.3121297264.

The spelling of 7223993 in words is "seven million, two hundred twenty-three thousand, nine hundred ninety-three".