1426889 has 2 divisors, whose sum is σ = 1426890. Its totient is φ = 1426888.

The previous prime is 1426883. The next prime is 1426891. The reversal of 1426889 is 9886241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 960400 + 466489 = 980^2 + 683^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1426889 is a prime.

It is a Sophie Germain prime.

Together with 1426891, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1426883) 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, 713444 + 713445.

It is an arithmetic number, because the mean of its divisors is an integer number (713445).

2^1426889 is an apocalyptic number.

It is an amenable number.

1426889 is a deficient number, since it is larger than the sum of its proper divisors (1).

1426889 is an equidigital number, since it uses as much as digits as its factorization.

1426889 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27648, while the sum is 38.

The square root of 1426889 is about 1194.5245916263. The cubic root of 1426889 is about 112.5805579389.

The spelling of 1426889 in words is "one million, four hundred twenty-six thousand, eight hundred eighty-nine".