772229 has 2 divisors, whose sum is σ = 772230. Its totient is φ = 772228.

The previous prime is 772207. The next prime is 772231. The reversal of 772229 is 922277.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 722500 + 49729 = 850^2 + 223^2 .

It is a cyclic number.

It is not a de Polignac number, because 772229 - 2⁸ = 771973 is a prime.

Together with 772231, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (772279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 386114 + 386115.

It is an arithmetic number, because the mean of its divisors is an integer number (386115).

2⁷⁷²²²⁹ is an apocalyptic number.

It is an amenable number.

772229 is a deficient number, since it is larger than the sum of its proper divisors (1).

772229 is an equidigital number, since it uses as much as digits as its factorization.

772229 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3528, while the sum is 29.

The square root of 772229 is about 878.7656115256. The cubic root of 772229 is about 91.7449219719.

It can be divided in two parts, 772 and 229, that added together give a palindrome (1001).

The spelling of 772229 in words is "seven hundred seventy-two thousand, two hundred twenty-nine".