2147227409 has 2 divisors, whose sum is σ = 2147227410. Its totient is φ = 2147227408.

The previous prime is 2147227393. The next prime is 2147227447. The reversal of 2147227409 is 9047227412.

It is an a-pointer prime, because the next prime (2147227447) can be obtained adding 2147227409 to its sum of digits (38).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1695792400 + 451435009 = 41180^2 + 21247^2 .

It is a cyclic number.

It is not a de Polignac number, because 2147227409 - 2⁴ = 2147227393 is a prime.

It is a super-2 number, since 2×2147227409² = 9221171091921706562, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2147227009) 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, 1073613704 + 1073613705.

It is an arithmetic number, because the mean of its divisors is an integer number (1073613705).

Almost surely, 2^2147227409 is an apocalyptic number.

It is an amenable number.

2147227409 is a deficient number, since it is larger than the sum of its proper divisors (1).

2147227409 is an equidigital number, since it uses as much as digits as its factorization.

2147227409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 56448, while the sum is 38.

The square root of 2147227409 is about 46338.1852147880. The cubic root of 2147227409 is about 1290.1078388706.

The spelling of 2147227409 in words is "two billion, one hundred forty-seven million, two hundred twenty-seven thousand, four hundred nine".