137994229 has 2 divisors, whose sum is σ = 137994230. Its totient is φ = 137994228.

The previous prime is 137994217. The next prime is 137994239. The reversal of 137994229 is 922499731.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 118853604 + 19140625 = 10902^2 + 4375^2 .

It is an emirp because it is prime and its reverse (922499731) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 137994229 - 2¹¹ = 137992181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (137994239) 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, 68997114 + 68997115.

It is an arithmetic number, because the mean of its divisors is an integer number (68997115).

Almost surely, 2^137994229 is an apocalyptic number.

It is an amenable number.

137994229 is a deficient number, since it is larger than the sum of its proper divisors (1).

137994229 is an equidigital number, since it uses as much as digits as its factorization.

137994229 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 244944, while the sum is 46.

The square root of 137994229 is about 11747.0944918307. The cubic root of 137994229 is about 516.7577216326.

The spelling of 137994229 in words is "one hundred thirty-seven million, nine hundred ninety-four thousand, two hundred twenty-nine".