7967993 has 8 divisors (see below), whose sum is σ = 8736096. Its totient is φ = 7207200.

The previous prime is 7967989. The next prime is 7968001. The reversal of 7967993 is 3997697.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 7967993 - 2² = 7967989 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7967923) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 605 + ... + 4037.

It is an arithmetic number, because the mean of its divisors is an integer number (1092012).

Almost surely, 2^7967993 is an apocalyptic number.

It is an amenable number.

7967993 is a deficient number, since it is larger than the sum of its proper divisors (768103).

7967993 is a wasteful number, since it uses less digits than its factorization.

7967993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3655.

The product of its digits is 642978, while the sum is 50.

The square root of 7967993 is about 2822.7633623809. The cubic root of 7967993 is about 199.7329184961.

It can be divided in two parts, 79679 and 93, that multiplied together give a palindrome (7410147).

The spelling of 7967993 in words is "seven million, nine hundred sixty-seven thousand, nine hundred ninety-three".