1097849 has 2 divisors, whose sum is σ = 1097850. Its totient is φ = 1097848.

The previous prime is 1097819. The next prime is 1097851. The reversal of 1097849 is 9487901.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1087849 + 10000 = 1043^2 + 100^2 .

It is a cyclic number.

It is not a de Polignac number, because 1097849 - 2¹² = 1093753 is a prime.

Together with 1097851, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1097819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 548924 + 548925.

It is an arithmetic number, because the mean of its divisors is an integer number (548925).

2^1097849 is an apocalyptic number.

It is an amenable number.

1097849 is a deficient number, since it is larger than the sum of its proper divisors (1).

1097849 is an equidigital number, since it uses as much as digits as its factorization.

1097849 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 38.

The square root of 1097849 is about 1047.7828973599. The cubic root of 1097849 is about 103.1606817450.

The spelling of 1097849 in words is "one million, ninety-seven thousand, eight hundred forty-nine".