1234622009 has 2 divisors, whose sum is σ = 1234622010. Its totient is φ = 1234622008.

The previous prime is 1234621987. The next prime is 1234622029. The reversal of 1234622009 is 9002264321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 727111225 + 507510784 = 26965^2 + 22528^2 .

It is an emirp because it is prime and its reverse (9002264321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1234622009 - 2²⁰ = 1233573433 is a prime.

It is not a weakly prime, because it can be changed into another prime (1234622029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 617311004 + 617311005.

It is an arithmetic number, because the mean of its divisors is an integer number (617311005).

Almost surely, 2^1234622009 is an apocalyptic number.

It is an amenable number.

1234622009 is a deficient number, since it is larger than the sum of its proper divisors (1).

1234622009 is an equidigital number, since it uses as much as digits as its factorization.

1234622009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 1234622009 is about 35137.1884048795. The cubic root of 1234622009 is about 1072.7816548081.

The spelling of 1234622009 in words is "one billion, two hundred thirty-four million, six hundred twenty-two thousand, nine".