7891141 has 2 divisors, whose sum is σ = 7891142. Its totient is φ = 7891140.

The previous prime is 7891123. The next prime is 7891151. The reversal of 7891141 is 1411987.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7134241 + 756900 = 2671^2 + 870^2 .

It is an emirp because it is prime and its reverse (1411987) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7891141 - 2¹⁵ = 7858373 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7891151) 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, 3945570 + 3945571.

It is an arithmetic number, because the mean of its divisors is an integer number (3945571).

Almost surely, 2^7891141 is an apocalyptic number.

It is an amenable number.

7891141 is a deficient number, since it is larger than the sum of its proper divisors (1).

7891141 is an equidigital number, since it uses as much as digits as its factorization.

7891141 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2016, while the sum is 31.

The square root of 7891141 is about 2809.1174770735. The cubic root of 7891141 is about 199.0886955949.

It can be divided in two parts, 78 and 91141, that added together give a palindrome (91219).

The spelling of 7891141 in words is "seven million, eight hundred ninety-one thousand, one hundred forty-one".