814939 has 2 divisors, whose sum is σ = 814940. Its totient is φ = 814938.

The previous prime is 814937. The next prime is 814943. The reversal of 814939 is 939418.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 814939 - 2¹ = 814937 is a prime.

Together with 814937, it forms a pair of twin primes.

814939 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (814937) 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, 407469 + 407470.

It is an arithmetic number, because the mean of its divisors is an integer number (407470).

2⁸¹⁴⁹³⁹ is an apocalyptic number.

814939 is a deficient number, since it is larger than the sum of its proper divisors (1).

814939 is an equidigital number, since it uses as much as digits as its factorization.

814939 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7776, while the sum is 34.

The square root of 814939 is about 902.7397188559. The cubic root of 814939 is about 93.4060558504.

The spelling of 814939 in words is "eight hundred fourteen thousand, nine hundred thirty-nine".