1000919 has 2 divisors, whose sum is σ = 1000920. Its totient is φ = 1000918.

The previous prime is 1000907. The next prime is 1000921. The reversal of 1000919 is 9190001.

It is a strong prime.

It is an emirp because it is prime and its reverse (9190001) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1000919 is a prime.

It is a super-2 number, since 2×1000919² = 2003677689122, which contains 22 as substring.

Together with 1000921, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1000919.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1000969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500459 + 500460.

It is an arithmetic number, because the mean of its divisors is an integer number (500460).

2^1000919 is an apocalyptic number.

1000919 is a deficient number, since it is larger than the sum of its proper divisors (1).

1000919 is an equidigital number, since it uses as much as digits as its factorization.

1000919 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 81, while the sum is 20.

The square root of 1000919 is about 1000.4593944784. The cubic root of 1000919 is about 100.0306239541.

The spelling of 1000919 in words is "one million, nine hundred nineteen", and thus it is an aban number.