137866229 has 2 divisors, whose sum is σ = 137866230. Its totient is φ = 137866228.

The previous prime is 137866217. The next prime is 137866241. The reversal of 137866229 is 922668731.

It is a balanced prime because it is at equal distance from previous prime (137866217) and next prime (137866241).

It can be written as a sum of positive squares in only one way, i.e., 78730129 + 59136100 = 8873^2 + 7690^2 .

It is a cyclic number.

It is not a de Polignac number, because 137866229 - 2¹² = 137862133 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is equal to p_7798409 and since 137866229 and 7798409 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 137866229.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (137866249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68933114 + 68933115.

It is an arithmetic number, because the mean of its divisors is an integer number (68933115).

Almost surely, 2^137866229 is an apocalyptic number.

It is an amenable number.

137866229 is a deficient number, since it is larger than the sum of its proper divisors (1).

137866229 is an equidigital number, since it uses as much as digits as its factorization.

137866229 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 217728, while the sum is 44.

The square root of 137866229 is about 11741.6450721353. The cubic root of 137866229 is about 516.5978950204.

The spelling of 137866229 in words is "one hundred thirty-seven million, eight hundred sixty-six thousand, two hundred twenty-nine".