965491139 has 2 divisors, whose sum is σ = 965491140. Its totient is φ = 965491138.

The previous prime is 965491127. The next prime is 965491193. The reversal of 965491139 is 931194569.

It is a happy number.

965491139 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Together with next prime (965491193) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is an emirp because it is prime and its reverse (931194569) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-965491139 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a zygodrome in base 2.

It is a junction number, because it is equal to n+sod(n) for n = 965491093 and 965491102.

It is not a weakly prime, because it can be changed into another prime (965490139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 482745569 + 482745570.

It is an arithmetic number, because the mean of its divisors is an integer number (482745570).

Almost surely, 2^965491139 is an apocalyptic number.

965491139 is a deficient number, since it is larger than the sum of its proper divisors (1).

965491139 is an equidigital number, since it uses as much as digits as its factorization.

965491139 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 262440, while the sum is 47.

The square root of 965491139 is about 31072.3532903448. The cubic root of 965491139 is about 988.3621317672.

The spelling of 965491139 in words is "nine hundred sixty-five million, four hundred ninety-one thousand, one hundred thirty-nine".