1047649 has 2 divisors, whose sum is σ = 1047650. Its totient is φ = 1047648.

The previous prime is 1047647. The next prime is 1047653. The reversal of 1047649 is 9467401.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1030225 + 17424 = 1015^2 + 132^2 .

It is a cyclic number.

It is not a de Polignac number, because 1047649 - 2¹ = 1047647 is a prime.

Together with 1047647, it forms a pair of twin primes.

It is a nialpdrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 1047649.

It is not a weakly prime, because it can be changed into another prime (1047647) 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, 523824 + 523825.

It is an arithmetic number, because the mean of its divisors is an integer number (523825).

2^1047649 is an apocalyptic number.

It is an amenable number.

1047649 is a deficient number, since it is larger than the sum of its proper divisors (1).

1047649 is an equidigital number, since it uses as much as digits as its factorization.

1047649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 1047649 is about 1023.5472631979. The cubic root of 1047649 is about 101.5637203325.

The spelling of 1047649 in words is "one million, forty-seven thousand, six hundred forty-nine".