1266929 has 2 divisors, whose sum is σ = 1266930. Its totient is φ = 1266928.

The previous prime is 1266919. The next prime is 1266931. The reversal of 1266929 is 9296621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1151329 + 115600 = 1073^2 + 340^2 .

It is a cyclic number.

It is not a de Polignac number, because 1266929 - 2⁴ = 1266913 is a prime.

Together with 1266931, 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 (1266919) 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, 633464 + 633465.

It is an arithmetic number, because the mean of its divisors is an integer number (633465).

2^1266929 is an apocalyptic number.

It is an amenable number.

1266929 is a deficient number, since it is larger than the sum of its proper divisors (1).

1266929 is an equidigital number, since it uses as much as digits as its factorization.

1266929 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11664, while the sum is 35.

The square root of 1266929 is about 1125.5794063503. The cubic root of 1266929 is about 108.2058545218.

The spelling of 1266929 in words is "one million, two hundred sixty-six thousand, nine hundred twenty-nine".