1047997 has 2 divisors, whose sum is σ = 1047998. Its totient is φ = 1047996.

The previous prime is 1047989. The next prime is 1048007. The reversal of 1047997 is 7997401.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 811801 + 236196 = 901^2 + 486^2 .

It is a cyclic number.

It is not a de Polignac number, because 1047997 - 2³ = 1047989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1047097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 523998 + 523999.

It is an arithmetic number, because the mean of its divisors is an integer number (523999).

2^1047997 is an apocalyptic number.

It is an amenable number.

1047997 is a deficient number, since it is larger than the sum of its proper divisors (1).

1047997 is an equidigital number, since it uses as much as digits as its factorization.

1047997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15876, while the sum is 37.

The square root of 1047997 is about 1023.7172461183. The cubic root of 1047997 is about 101.5749646398.

The spelling of 1047997 in words is "one million, forty-seven thousand, nine hundred ninety-seven".