139382429 has 2 divisors, whose sum is σ = 139382430. Its totient is φ = 139382428.

The previous prime is 139382407. The next prime is 139382471. The reversal of 139382429 is 924283931.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 93508900 + 45873529 = 9670^2 + 6773^2 .

It is a cyclic number.

It is not a de Polignac number, because 139382429 - 2¹² = 139378333 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (139382029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69691214 + 69691215.

It is an arithmetic number, because the mean of its divisors is an integer number (69691215).

Almost surely, 2^139382429 is an apocalyptic number.

It is an amenable number.

139382429 is a deficient number, since it is larger than the sum of its proper divisors (1).

139382429 is an equidigital number, since it uses as much as digits as its factorization.

139382429 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 93312, while the sum is 41.

The square root of 139382429 is about 11806.0335845702. The cubic root of 139382429 is about 518.4847767164.

The spelling of 139382429 in words is "one hundred thirty-nine million, three hundred eighty-two thousand, four hundred twenty-nine".