139334249 has 2 divisors, whose sum is σ = 139334250. Its totient is φ = 139334248.

The previous prime is 139334231. The next prime is 139334257. The reversal of 139334249 is 942433931.

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., 139240000 + 94249 = 11800^2 + 307^2 .

It is an emirp because it is prime and its reverse (942433931) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 139334249 - 2⁸ = 139333993 is a prime.

It is not a weakly prime, because it can be changed into another prime (139334149) 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, 69667124 + 69667125.

It is an arithmetic number, because the mean of its divisors is an integer number (69667125).

Almost surely, 2^139334249 is an apocalyptic number.

It is an amenable number.

139334249 is a deficient number, since it is larger than the sum of its proper divisors (1).

139334249 is an equidigital number, since it uses as much as digits as its factorization.

139334249 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 69984, while the sum is 38.

The square root of 139334249 is about 11803.9929261246. The cubic root of 139334249 is about 518.4250286893.

The spelling of 139334249 in words is "one hundred thirty-nine million, three hundred thirty-four thousand, two hundred forty-nine".