139961149 has 2 divisors, whose sum is σ = 139961150. Its totient is φ = 139961148.

The previous prime is 139961137. The next prime is 139961161. The reversal of 139961149 is 941169931.

It is a balanced prime because it is at equal distance from previous prime (139961137) and next prime (139961161).

It can be written as a sum of positive squares in only one way, i.e., 116748025 + 23213124 = 10805^2 + 4818^2 .

It is a cyclic number.

It is not a de Polignac number, because 139961149 - 2¹¹ = 139959101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (139961179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69980574 + 69980575.

It is an arithmetic number, because the mean of its divisors is an integer number (69980575).

Almost surely, 2^139961149 is an apocalyptic number.

It is an amenable number.

139961149 is a deficient number, since it is larger than the sum of its proper divisors (1).

139961149 is an equidigital number, since it uses as much as digits as its factorization.

139961149 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 52488, while the sum is 43.

The square root of 139961149 is about 11830.5176978863. The cubic root of 139961149 is about 519.2013739346.

The spelling of 139961149 in words is "one hundred thirty-nine million, nine hundred sixty-one thousand, one hundred forty-nine".