1050000409 has 2 divisors, whose sum is σ = 1050000410. Its totient is φ = 1050000408.

The previous prime is 1050000397. The next prime is 1050000431. The reversal of 1050000409 is 9040000501.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 655104025 + 394896384 = 25595^2 + 19872^2 .

It is a cyclic number.

It is not a de Polignac number, because 1050000409 - 2¹³ = 1049992217 is a prime.

It is a super-2 number, since 2×1050000409² = 2205001717800334562, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1050000449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 525000204 + 525000205.

It is an arithmetic number, because the mean of its divisors is an integer number (525000205).

Almost surely, 2^1050000409 is an apocalyptic number.

It is an amenable number.

1050000409 is a deficient number, since it is larger than the sum of its proper divisors (1).

1050000409 is an equidigital number, since it uses as much as digits as its factorization.

1050000409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 1050000409 is about 32403.7098030457. The cubic root of 1050000409 is about 1016.3964887850.

The spelling of 1050000409 in words is "one billion, fifty million, four hundred nine", and thus it is an aban number.