1109405723 has 2 divisors, whose sum is σ = 1109405724. Its totient is φ = 1109405722.

The previous prime is 1109405707. The next prime is 1109405741. The reversal of 1109405723 is 3275049011.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1109405723 - 2⁴ = 1109405707 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1109405723.

It is not a weakly prime, because it can be changed into another prime (1109405753) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 554702861 + 554702862.

It is an arithmetic number, because the mean of its divisors is an integer number (554702862).

Almost surely, 2^1109405723 is an apocalyptic number.

1109405723 is a deficient number, since it is larger than the sum of its proper divisors (1).

1109405723 is an equidigital number, since it uses as much as digits as its factorization.

1109405723 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 1109405723 is about 33307.7426884501. The cubic root of 1109405723 is about 1035.2139935750.

The spelling of 1109405723 in words is "one billion, one hundred nine million, four hundred five thousand, seven hundred twenty-three".