240400444319809 has 2 divisors, whose sum is σ = 240400444319810. Its totient is φ = 240400444319808.

The previous prime is 240400444319753. The next prime is 240400444319821. The reversal of 240400444319809 is 908913444004042.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 126843117876225 + 113557326443584 = 11262465^2 + 10656328^2 .

It is a cyclic number.

It is not a de Polignac number, because 240400444319809 - 2¹³ = 240400444311617 is a prime.

It is not a weakly prime, because it can be changed into another prime (240400444319839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120200222159904 + 120200222159905.

It is an arithmetic number, because the mean of its divisors is an integer number (120200222159905).

Almost surely, 2^{240400444319809} is an apocalyptic number.

It is an amenable number.

240400444319809 is a deficient number, since it is larger than the sum of its proper divisors (1).

240400444319809 is an equidigital number, since it uses as much as digits as its factorization.

240400444319809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3981312, while the sum is 52.

The spelling of 240400444319809 in words is "two hundred forty trillion, four hundred billion, four hundred forty-four million, three hundred nineteen thousand, eight hundred nine".