139170089 has 2 divisors, whose sum is σ = 139170090. Its totient is φ = 139170088.

The previous prime is 139170037. The next prime is 139170091. The reversal of 139170089 is 980071931.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 70694464 + 68475625 = 8408^2 + 8275^2 .

It is an emirp because it is prime and its reverse (980071931) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 139170089 - 2¹² = 139165993 is a prime.

Together with 139170091, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (139170989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69585044 + 69585045.

It is an arithmetic number, because the mean of its divisors is an integer number (69585045).

Almost surely, 2^139170089 is an apocalyptic number.

It is an amenable number.

139170089 is a deficient number, since it is larger than the sum of its proper divisors (1).

139170089 is an equidigital number, since it uses as much as digits as its factorization.

139170089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13608, while the sum is 38.

The square root of 139170089 is about 11797.0372975591. The cubic root of 139170089 is about 518.2213503692.

The spelling of 139170089 in words is "one hundred thirty-nine million, one hundred seventy thousand, eighty-nine".