1109249 has 2 divisors, whose sum is σ = 1109250. Its totient is φ = 1109248.

The previous prime is 1109243. The next prime is 1109257. The reversal of 1109249 is 9429011.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 937024 + 172225 = 968^2 + 415^2 .

It is a cyclic number.

It is not a de Polignac number, because 1109249 - 2⁸ = 1108993 is a prime.

It is not a weakly prime, because it can be changed into another prime (1109243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 554624 + 554625.

It is an arithmetic number, because the mean of its divisors is an integer number (554625).

2^1109249 is an apocalyptic number.

It is an amenable number.

1109249 is a deficient number, since it is larger than the sum of its proper divisors (1).

1109249 is an equidigital number, since it uses as much as digits as its factorization.

1109249 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 26.

The square root of 1109249 is about 1053.2089061530. The cubic root of 1109249 is about 103.5165243907.

The spelling of 1109249 in words is "one million, one hundred nine thousand, two hundred forty-nine".