7927 has 2 divisors, whose sum is σ = 7928. Its totient is φ = 7926.

The previous prime is 7919. The next prime is 7933. The reversal of 7927 is 7297.

7927 is an esthetic number in base 3, because in such base its adjacent digits differ by 1.

It is a strong prime.

It is an emirp because it is prime and its reverse (7297) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7927 - 2^{3} = 7919 is a prime.

It is a plaindrome in base 9.

It is a zygodrome in base 9.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3963 + 3964.

It is an arithmetic number, because the mean of its divisors is an integer number (3964).

2^{7927} is an apocalyptic number.

7927 is a deficient number, since it is larger than the sum of its proper divisors (1).

7927 is an equidigital number, since it uses as much as digits as its factorization.

7927 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 882, while the sum is 25.

The square root of 7927 is about 89.0337014843. The cubic root of 7927 is about 19.9389806882.

Subtracting from 7927 its reverse (7297), we obtain a triangular number (630 = T_{35}).

The spelling of 7927 in words is "seven thousand, nine hundred twenty-seven".

• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.102 sec. • engine limits •