400003336709 has 2 divisors, whose sum is σ = 400003336710. Its totient is φ = 400003336708.

The previous prime is 400003336669. The next prime is 400003336717. The reversal of 400003336709 is 907633300004.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 258399388900 + 141603947809 = 508330^2 + 376303^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-400003336709 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (400003336409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200001668354 + 200001668355.

It is an arithmetic number, because the mean of its divisors is an integer number (200001668355).

Almost surely, 2^400003336709 is an apocalyptic number.

It is an amenable number.

400003336709 is a deficient number, since it is larger than the sum of its proper divisors (1).

400003336709 is an equidigital number, since it uses as much as digits as its factorization.

400003336709 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40824, while the sum is 35.

The spelling of 400003336709 in words is "four hundred billion, three million, three hundred thirty-six thousand, seven hundred nine".