7129229 has 2 divisors, whose sum is σ = 7129230. Its totient is φ = 7129228.

The previous prime is 7129219. The next prime is 7129231. The reversal of 7129229 is 9229217.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5244100 + 1885129 = 2290^2 + 1373^2 .

It is a cyclic number.

It is not a de Polignac number, because 7129229 - 2⁸ = 7128973 is a prime.

It is a super-2 number, since 2×7129229² = 101651812268882, which contains 22 as substring.

Together with 7129231, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 7129195 and 7129204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7129219) 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, 3564614 + 3564615.

It is an arithmetic number, because the mean of its divisors is an integer number (3564615).

Almost surely, 2^7129229 is an apocalyptic number.

It is an amenable number.

7129229 is a deficient number, since it is larger than the sum of its proper divisors (1).

7129229 is an equidigital number, since it uses as much as digits as its factorization.

7129229 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4536, while the sum is 32.

The square root of 7129229 is about 2670.0616097761. The cubic root of 7129229 is about 192.4631199377.

The spelling of 7129229 in words is "seven million, one hundred twenty-nine thousand, two hundred twenty-nine".