139984241 has 2 divisors, whose sum is σ = 139984242. Its totient is φ = 139984240.

The previous prime is 139984223. The next prime is 139984253. The reversal of 139984241 is 142489931.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 134560000 + 5424241 = 11600^2 + 2329^2 .

It is an emirp because it is prime and its reverse (142489931) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 139984241 - 2⁶ = 139984177 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (139984211) 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, 69992120 + 69992121.

It is an arithmetic number, because the mean of its divisors is an integer number (69992121).

Almost surely, 2^139984241 is an apocalyptic number.

It is an amenable number.

139984241 is a deficient number, since it is larger than the sum of its proper divisors (1).

139984241 is an equidigital number, since it uses as much as digits as its factorization.

139984241 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 62208, while the sum is 41.

The square root of 139984241 is about 11831.4936081629. The cubic root of 139984241 is about 519.2299264744.

The spelling of 139984241 in words is "one hundred thirty-nine million, nine hundred eighty-four thousand, two hundred forty-one".