961109 has 2 divisors, whose sum is σ = 961110. Its totient is φ = 961108.

The previous prime is 961099. The next prime is 961117. The reversal of 961109 is 901169.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 908209 + 52900 = 953^2 + 230^2 .

It is an emirp because it is prime and its reverse (901169) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-961109 is a prime.

It is a Chen prime.

It is a nialpdrome in base 4 and base 16.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (961139) by changing a digit.

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

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 480554 + 480555.

It is an arithmetic number, because the mean of its divisors is an integer number (480555).

2⁹⁶¹¹⁰⁹ is an apocalyptic number.

It is an amenable number.

961109 is a deficient number, since it is larger than the sum of its proper divisors (1).

961109 is an equidigital number, since it uses as much as digits as its factorization.

961109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 486, while the sum is 26.

The square root of 961109 is about 980.3616679573. The cubic root of 961109 is about 98.6864548717.

The spelling of 961109 in words is "nine hundred sixty-one thousand, one hundred nine".