140445470309 has 2 divisors, whose sum is σ = 140445470310. Its totient is φ = 140445470308.

The previous prime is 140445470281. The next prime is 140445470317. The reversal of 140445470309 is 903074544041.

140445470309 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 133729176100 + 6716294209 = 365690^2 + 81953^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140445470309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140445470339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70222735154 + 70222735155.

It is an arithmetic number, because the mean of its divisors is an integer number (70222735155).

Almost surely, 2^140445470309 is an apocalyptic number.

It is an amenable number.

140445470309 is a deficient number, since it is larger than the sum of its proper divisors (1).

140445470309 is an equidigital number, since it uses as much as digits as its factorization.

140445470309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 241920, while the sum is 41.

The spelling of 140445470309 in words is "one hundred forty billion, four hundred forty-five million, four hundred seventy thousand, three hundred nine".