1109974409 has 2 divisors, whose sum is σ = 1109974410. Its totient is φ = 1109974408.

The previous prime is 1109974381. The next prime is 1109974469. The reversal of 1109974409 is 9044799011.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 908419600 + 201554809 = 30140^2 + 14197^2 .

It is a cyclic number.

It is not a de Polignac number, because 1109974409 - 2¹⁶ = 1109908873 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1109974409.

It is not a weakly prime, because it can be changed into another prime (1109974469) 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, 554987204 + 554987205.

It is an arithmetic number, because the mean of its divisors is an integer number (554987205).

Almost surely, 2^1109974409 is an apocalyptic number.

It is an amenable number.

1109974409 is a deficient number, since it is larger than the sum of its proper divisors (1).

1109974409 is an equidigital number, since it uses as much as digits as its factorization.

1109974409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 81648, while the sum is 44.

The square root of 1109974409 is about 33316.2784386252. The cubic root of 1109974409 is about 1035.3908483630.

The spelling of 1109974409 in words is "one billion, one hundred nine million, nine hundred seventy-four thousand, four hundred nine".