7987793 has 4 divisors (see below), whose sum is σ = 8713968. Its totient is φ = 7261620.

The previous prime is 7987781. The next prime is 7987799. The reversal of 7987793 is 3977897.

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 not a de Polignac number, because 7987793 - 2⁶ = 7987729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7987799) 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, 363071 + ... + 363092.

It is an arithmetic number, because the mean of its divisors is an integer number (2178492).

Almost surely, 2^7987793 is an apocalyptic number.

It is an amenable number.

7987793 is a deficient number, since it is larger than the sum of its proper divisors (726175).

7987793 is a wasteful number, since it uses less digits than its factorization.

7987793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 726174.

The product of its digits is 666792, while the sum is 50.

The square root of 7987793 is about 2826.2683878217. The cubic root of 7987793 is about 199.8982232162.

The spelling of 7987793 in words is "seven million, nine hundred eighty-seven thousand, seven hundred ninety-three".