7405055809 has 2 divisors, whose sum is σ = 7405055810. Its totient is φ = 7405055808.

The previous prime is 7405055773. The next prime is 7405055869. The reversal of 7405055809 is 9085505047.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6011676225 + 1393379584 = 77535^2 + 37328^2 .

It is a cyclic number.

It is not a de Polignac number, because 7405055809 - 2¹⁹ = 7404531521 is a prime.

It is not a weakly prime, because it can be changed into another prime (7405055869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3702527904 + 3702527905.

It is an arithmetic number, because the mean of its divisors is an integer number (3702527905).

Almost surely, 2^7405055809 is an apocalyptic number.

It is an amenable number.

7405055809 is a deficient number, since it is larger than the sum of its proper divisors (1).

7405055809 is an equidigital number, since it uses as much as digits as its factorization.

7405055809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 252000, while the sum is 43.

The square root of 7405055809 is about 86052.6339457428. The cubic root of 7405055809 is about 1949.1388535117.

The spelling of 7405055809 in words is "seven billion, four hundred five million, fifty-five thousand, eight hundred nine".