10400003309 has 2 divisors, whose sum is σ = 10400003310. Its totient is φ = 10400003308.

The previous prime is 10400003293. The next prime is 10400003333. The reversal of 10400003309 is 90330000401.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9341802409 + 1058200900 = 96653^2 + 32530^2 .

It is an emirp because it is prime and its reverse (90330000401) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 10400003309 - 2⁴ = 10400003293 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10400003389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5200001654 + 5200001655.

It is an arithmetic number, because the mean of its divisors is an integer number (5200001655).

Almost surely, 2^10400003309 is an apocalyptic number.

It is an amenable number.

10400003309 is a deficient number, since it is larger than the sum of its proper divisors (1).

10400003309 is an equidigital number, since it uses as much as digits as its factorization.

10400003309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324, while the sum is 20.

The spelling of 10400003309 in words is "ten billion, four hundred million, three thousand, three hundred nine".