7229791 has 2 divisors, whose sum is σ = 7229792. Its totient is φ = 7229790.

The previous prime is 7229771. The next prime is 7229809. The reversal of 7229791 is 1979227.

It is a strong prime.

It is an emirp because it is prime and its reverse (1979227) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7229791 - 2⁹ = 7229279 is a prime.

7229791 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 7229791.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7229711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3614895 + 3614896.

It is an arithmetic number, because the mean of its divisors is an integer number (3614896).

Almost surely, 2^7229791 is an apocalyptic number.

7229791 is a deficient number, since it is larger than the sum of its proper divisors (1).

7229791 is an equidigital number, since it uses as much as digits as its factorization.

7229791 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15876, while the sum is 37.

The square root of 7229791 is about 2688.8270677007. The cubic root of 7229791 is about 193.3638335419.

The spelling of 7229791 in words is "seven million, two hundred twenty-nine thousand, seven hundred ninety-one".