140010209 has 2 divisors, whose sum is σ = 140010210. Its totient is φ = 140010208.

The previous prime is 140010191. The next prime is 140010239. The reversal of 140010209 is 902010041.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 112678225 + 27331984 = 10615^2 + 5228^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140010209 is a prime.

It is not a weakly prime, because it can be changed into another prime (140010239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70005104 + 70005105.

It is an arithmetic number, because the mean of its divisors is an integer number (70005105).

Almost surely, 2^140010209 is an apocalyptic number.

It is an amenable number.

140010209 is a deficient number, since it is larger than the sum of its proper divisors (1).

140010209 is an equidigital number, since it uses as much as digits as its factorization.

140010209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 140010209 is about 11832.5909673241. The cubic root of 140010209 is about 519.2620313479.

The spelling of 140010209 in words is "one hundred forty million, ten thousand, two hundred nine".