1994947 has 2 divisors, whose sum is σ = 1994948. Its totient is φ = 1994946.

The previous prime is 1994911. The next prime is 1994953. The reversal of 1994947 is 7494991.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1994947 - 2¹⁹ = 1470659 is a prime.

It is a zygodrome in base 2.

It is not a weakly prime, because it can be changed into another prime (1994977) 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, 997473 + 997474.

It is an arithmetic number, because the mean of its divisors is an integer number (997474).

2^1994947 is an apocalyptic number.

1994947 is a deficient number, since it is larger than the sum of its proper divisors (1).

1994947 is an equidigital number, since it uses as much as digits as its factorization.

1994947 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 81648, while the sum is 43.

The square root of 1994947 is about 1412.4259272613. The cubic root of 1994947 is about 125.8859091535.

The spelling of 1994947 in words is "one million, nine hundred ninety-four thousand, nine hundred forty-seven".