139382077 has 2 divisors, whose sum is σ = 139382078. Its totient is φ = 139382076.

The previous prime is 139382063. The next prime is 139382123. The reversal of 139382077 is 770283931.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 139381636 + 441 = 11806^2 + 21^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-139382077 is a prime.

It is a Chen prime.

It is equal to p_7879135 and since 139382077 and 7879135 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (139382977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69691038 + 69691039.

It is an arithmetic number, because the mean of its divisors is an integer number (69691039).

Almost surely, 2^139382077 is an apocalyptic number.

It is an amenable number.

139382077 is a deficient number, since it is larger than the sum of its proper divisors (1).

139382077 is an equidigital number, since it uses as much as digits as its factorization.

139382077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 63504, while the sum is 40.

The square root of 139382077 is about 11806.0186769292. The cubic root of 139382077 is about 518.4843402510.

The spelling of 139382077 in words is "one hundred thirty-nine million, three hundred eighty-two thousand, seventy-seven".