139289682409 has 2 divisors, whose sum is σ = 139289682410. Its totient is φ = 139289682408.

The previous prime is 139289682401. The next prime is 139289682451. The reversal of 139289682409 is 904286982931.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 135276840000 + 4012842409 = 367800^2 + 63347^2 .

It is a cyclic number.

It is not a de Polignac number, because 139289682409 - 2³ = 139289682401 is a prime.

It is not a weakly prime, because it can be changed into another prime (139289682401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69644841204 + 69644841205.

It is an arithmetic number, because the mean of its divisors is an integer number (69644841205).

Almost surely, 2^139289682409 is an apocalyptic number.

It is an amenable number.

139289682409 is a deficient number, since it is larger than the sum of its proper divisors (1).

139289682409 is an equidigital number, since it uses as much as digits as its factorization.

139289682409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13436928, while the sum is 61.

The spelling of 139289682409 in words is "one hundred thirty-nine billion, two hundred eighty-nine million, six hundred eighty-two thousand, four hundred nine".