239928229 has 2 divisors, whose sum is σ = 239928230. Its totient is φ = 239928228.

The previous prime is 239928209. The next prime is 239928253. The reversal of 239928229 is 922829932.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 175960225 + 63968004 = 13265^2 + 7998^2 .

It is a cyclic number.

It is not a de Polignac number, because 239928229 - 2⁹ = 239927717 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (239928209) 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, 119964114 + 119964115.

It is an arithmetic number, because the mean of its divisors is an integer number (119964115).

Almost surely, 2^239928229 is an apocalyptic number.

It is an amenable number.

239928229 is a deficient number, since it is larger than the sum of its proper divisors (1).

239928229 is an equidigital number, since it uses as much as digits as its factorization.

239928229 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 279936, while the sum is 46.

The square root of 239928229 is about 15489.6168125619. The cubic root of 239928229 is about 621.3845480191.

It can be divided in two parts, 2399 and 28229, that added together give a triangular number (30628 = T₂₄₇).

The spelling of 239928229 in words is "two hundred thirty-nine million, nine hundred twenty-eight thousand, two hundred twenty-nine".