1061909 has 2 divisors, whose sum is σ = 1061910. Its totient is φ = 1061908.

The previous prime is 1061903. The next prime is 1061911. The reversal of 1061909 is 9091601.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1030225 + 31684 = 1015^2 + 178^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1061909 is a prime.

It is a super-2 number, since 2×1061909² = 2255301448562, which contains 22 as substring.

Together with 1061911, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1061903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 530954 + 530955.

It is an arithmetic number, because the mean of its divisors is an integer number (530955).

2^1061909 is an apocalyptic number.

It is an amenable number.

1061909 is a deficient number, since it is larger than the sum of its proper divisors (1).

1061909 is an equidigital number, since it uses as much as digits as its factorization.

1061909 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 1061909 is about 1030.4896894195. The cubic root of 1061909 is about 102.0224543670.

The spelling of 1061909 in words is "one million, sixty-one thousand, nine hundred nine".