139043089 has 2 divisors, whose sum is σ = 139043090. Its totient is φ = 139043088.

The previous prime is 139043059. The next prime is 139043131. The reversal of 139043089 is 980340931.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 90155025 + 48888064 = 9495^2 + 6992^2 .

It is a cyclic number.

It is not a de Polignac number, because 139043089 - 2⁵ = 139043057 is a prime.

It is equal to p_7861087 and since 139043089 and 7861087 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (139043059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69521544 + 69521545.

It is an arithmetic number, because the mean of its divisors is an integer number (69521545).

Almost surely, 2^139043089 is an apocalyptic number.

It is an amenable number.

139043089 is a deficient number, since it is larger than the sum of its proper divisors (1).

139043089 is an equidigital number, since it uses as much as digits as its factorization.

139043089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23328, while the sum is 37.

The square root of 139043089 is about 11791.6533615944. The cubic root of 139043089 is about 518.0636676810.

The spelling of 139043089 in words is "one hundred thirty-nine million, forty-three thousand, eighty-nine".