1001947 has 2 divisors, whose sum is σ = 1001948. Its totient is φ = 1001946.

The previous prime is 1001941. The next prime is 1001953. The reversal of 1001947 is 7491001.

It is a balanced prime because it is at equal distance from previous prime (1001941) and next prime (1001953).

It is a cyclic number.

It is not a de Polignac number, because 1001947 - 2¹⁵ = 969179 is a prime.

It is not a weakly prime, because it can be changed into another prime (1001941) 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, 500973 + 500974.

It is an arithmetic number, because the mean of its divisors is an integer number (500974).

2^1001947 is an apocalyptic number.

1001947 is a deficient number, since it is larger than the sum of its proper divisors (1).

1001947 is an equidigital number, since it uses as much as digits as its factorization.

1001947 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 252, while the sum is 22.

The square root of 1001947 is about 1000.9730266096. The cubic root of 1001947 is about 100.0648579254.

Adding to 1001947 its reverse (7491001), we get a palindrome (8492948).

The spelling of 1001947 in words is "one million, one thousand, nine hundred forty-seven".