7993993 has 4 divisors (see below), whose sum is σ = 9136000. Its totient is φ = 6851988.

The previous prime is 7993987. The next prime is 7994017. The reversal of 7993993 is 3993997.

It is a happy number.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7993993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7993913) 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, 570993 + ... + 571006.

It is an arithmetic number, because the mean of its divisors is an integer number (2284000).

Almost surely, 2^7993993 is an apocalyptic number.

It is an amenable number.

7993993 is a deficient number, since it is larger than the sum of its proper divisors (1142007).

7993993 is a wasteful number, since it uses less digits than its factorization.

7993993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1142006.

The product of its digits is 413343, while the sum is 49.

The square root of 7993993 is about 2827.3650277246. The cubic root of 7993993 is about 199.9499291323.

The spelling of 7993993 in words is "seven million, nine hundred ninety-three thousand, nine hundred ninety-three".