7224839 has 2 divisors, whose sum is σ = 7224840. Its totient is φ = 7224838.

The previous prime is 7224823. The next prime is 7224869. The reversal of 7224839 is 9384227.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 7224839 - 2⁴ = 7224823 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7224799 and 7224808.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7224809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3612419 + 3612420.

It is an arithmetic number, because the mean of its divisors is an integer number (3612420).

Almost surely, 2^7224839 is an apocalyptic number.

7224839 is a deficient number, since it is larger than the sum of its proper divisors (1).

7224839 is an equidigital number, since it uses as much as digits as its factorization.

7224839 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24192, while the sum is 35.

The square root of 7224839 is about 2687.9060623467. The cubic root of 7224839 is about 193.3196756768.

The spelling of 7224839 in words is "seven million, two hundred twenty-four thousand, eight hundred thirty-nine".