1985047 has 2 divisors, whose sum is σ = 1985048. Its totient is φ = 1985046.

The previous prime is 1985041. The next prime is 1985051. The reversal of 1985047 is 7405891.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (7405891) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1985047 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1985041) 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, 992523 + 992524.

It is an arithmetic number, because the mean of its divisors is an integer number (992524).

2^1985047 is an apocalyptic number.

1985047 is a deficient number, since it is larger than the sum of its proper divisors (1).

1985047 is an equidigital number, since it uses as much as digits as its factorization.

1985047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10080, while the sum is 34.

The square root of 1985047 is about 1408.9169599377. The cubic root of 1985047 is about 125.6773258749.

The spelling of 1985047 in words is "one million, nine hundred eighty-five thousand, forty-seven".