40416388889 has 2 divisors, whose sum is σ = 40416388890. Its totient is φ = 40416388888.

The previous prime is 40416388879. The next prime is 40416388913. The reversal of 40416388889 is 98888361404.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25765707289 + 14650681600 = 160517^2 + 121040^2 .

It is a cyclic number.

It is not a de Polignac number, because 40416388889 - 2⁸ = 40416388633 is a prime.

It is not a weakly prime, because it can be changed into another prime (40416388879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20208194444 + 20208194445.

It is an arithmetic number, because the mean of its divisors is an integer number (20208194445).

Almost surely, 2^40416388889 is an apocalyptic number.

It is an amenable number.

40416388889 is a deficient number, since it is larger than the sum of its proper divisors (1).

40416388889 is an equidigital number, since it uses as much as digits as its factorization.

40416388889 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10616832, while the sum is 59.

The spelling of 40416388889 in words is "forty billion, four hundred sixteen million, three hundred eighty-eight thousand, eight hundred eighty-nine".