139410841 has 2 divisors, whose sum is σ = 139410842. Its totient is φ = 139410840.

The previous prime is 139410833. The next prime is 139410877. The reversal of 139410841 is 148014931.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 139145616 + 265225 = 11796^2 + 515^2 .

It is an emirp because it is prime and its reverse (148014931) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 139410841 - 2³ = 139410833 is a prime.

It is not a weakly prime, because it can be changed into another prime (139410881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69705420 + 69705421.

It is an arithmetic number, because the mean of its divisors is an integer number (69705421).

Almost surely, 2^139410841 is an apocalyptic number.

It is an amenable number.

139410841 is a deficient number, since it is larger than the sum of its proper divisors (1).

139410841 is an equidigital number, since it uses as much as digits as its factorization.

139410841 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 139410841 is about 11807.2368062981. The cubic root of 139410841 is about 518.5200039894.

The spelling of 139410841 in words is "one hundred thirty-nine million, four hundred ten thousand, eight hundred forty-one".