7945229 has 2 divisors, whose sum is σ = 7945230. Its totient is φ = 7945228.

The previous prime is 7945219. The next prime is 7945237. The reversal of 7945229 is 9225497.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5769604 + 2175625 = 2402^2 + 1475^2 .

It is an emirp because it is prime and its reverse (9225497) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7945229 - 2⁴ = 7945213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7945192 and 7945201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7945219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3972614 + 3972615.

It is an arithmetic number, because the mean of its divisors is an integer number (3972615).

Almost surely, 2^7945229 is an apocalyptic number.

It is an amenable number.

7945229 is a deficient number, since it is larger than the sum of its proper divisors (1).

7945229 is an equidigital number, since it uses as much as digits as its factorization.

7945229 is an evil number, because the sum of its binary digits is even.

The product of its digits is 45360, while the sum is 38.

The square root of 7945229 is about 2818.7282593397. The cubic root of 7945229 is about 199.5425294011.

The spelling of 7945229 in words is "seven million, nine hundred forty-five thousand, two hundred twenty-nine".