4094540100809 has 2 divisors, whose sum is σ = 4094540100810. Its totient is φ = 4094540100808.

The previous prime is 4094540100727. The next prime is 4094540100817. The reversal of 4094540100809 is 9080010454904.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2303024775184 + 1791515325625 = 1517572^2 + 1338475^2 .

It is a cyclic number.

It is not a de Polignac number, because 4094540100809 - 2¹⁶ = 4094540035273 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4094540100809.

It is not a weakly prime, because it can be changed into another prime (4094540120809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2047270050404 + 2047270050405.

It is an arithmetic number, because the mean of its divisors is an integer number (2047270050405).

Almost surely, 2^{4094540100809} is an apocalyptic number.

It is an amenable number.

4094540100809 is a deficient number, since it is larger than the sum of its proper divisors (1).

4094540100809 is an equidigital number, since it uses as much as digits as its factorization.

4094540100809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 207360, while the sum is 44.

The spelling of 4094540100809 in words is "four trillion, ninety-four billion, five hundred forty million, one hundred thousand, eight hundred nine".