139461193 has 2 divisors, whose sum is σ = 139461194. Its totient is φ = 139461192.

The previous prime is 139461187. The next prime is 139461209. The reversal of 139461193 is 391164931.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 77492809 + 61968384 = 8803^2 + 7872^2 .

It is a cyclic number.

It is not a de Polignac number, because 139461193 - 2²¹ = 137364041 is a prime.

It is not a weakly prime, because it can be changed into another prime (139461163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69730596 + 69730597.

It is an arithmetic number, because the mean of its divisors is an integer number (69730597).

Almost surely, 2^139461193 is an apocalyptic number.

It is an amenable number.

139461193 is a deficient number, since it is larger than the sum of its proper divisors (1).

139461193 is an equidigital number, since it uses as much as digits as its factorization.

139461193 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17496, while the sum is 37.

The square root of 139461193 is about 11809.3688654390. The cubic root of 139461193 is about 518.5824223217.

The spelling of 139461193 in words is "one hundred thirty-nine million, four hundred sixty-one thousand, one hundred ninety-three".