139293361 has 2 divisors, whose sum is σ = 139293362. Its totient is φ = 139293360.

The previous prime is 139293347. The next prime is 139293373. The reversal of 139293361 is 163392931.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 139240000 + 53361 = 11800^2 + 231^2 .

It is a cyclic number.

It is not a de Polignac number, because 139293361 - 2⁷ = 139293233 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 139293361.

It is not a weakly prime, because it can be changed into another prime (139293391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69646680 + 69646681.

It is an arithmetic number, because the mean of its divisors is an integer number (69646681).

Almost surely, 2^139293361 is an apocalyptic number.

It is an amenable number.

139293361 is a deficient number, since it is larger than the sum of its proper divisors (1).

139293361 is an equidigital number, since it uses as much as digits as its factorization.

139293361 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 26244, while the sum is 37.

The square root of 139293361 is about 11802.2608427369. The cubic root of 139293361 is about 518.3743126676.

The spelling of 139293361 in words is "one hundred thirty-nine million, two hundred ninety-three thousand, three hundred sixty-one".