14040236809 has 2 divisors, whose sum is σ = 14040236810. Its totient is φ = 14040236808.

The previous prime is 14040236807. The next prime is 14040236831. The reversal of 14040236809 is 90863204041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13881552400 + 158684409 = 117820^2 + 12597^2 .

It is a cyclic number.

It is not a de Polignac number, because 14040236809 - 2¹ = 14040236807 is a prime.

Together with 14040236807, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (14040236807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7020118404 + 7020118405.

It is an arithmetic number, because the mean of its divisors is an integer number (7020118405).

Almost surely, 2^14040236809 is an apocalyptic number.

It is an amenable number.

14040236809 is a deficient number, since it is larger than the sum of its proper divisors (1).

14040236809 is an equidigital number, since it uses as much as digits as its factorization.

14040236809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 41472, while the sum is 37.

The spelling of 14040236809 in words is "fourteen billion, forty million, two hundred thirty-six thousand, eight hundred nine".