1234232809 has 4 divisors (see below), whose sum is σ = 1236425616. Its totient is φ = 1232040004.

The previous prime is 1234232807. The next prime is 1234232819. The reversal of 1234232809 is 9082324321.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1234232809 - 2¹ = 1234232807 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1234232807) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1095559 + ... + 1096684.

It is an arithmetic number, because the mean of its divisors is an integer number (309106404).

Almost surely, 2^1234232809 is an apocalyptic number.

It is an amenable number.

1234232809 is a deficient number, since it is larger than the sum of its proper divisors (2192807).

1234232809 is an equidigital number, since it uses as much as digits as its factorization.

1234232809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2192806.

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 1234232809 is about 35131.6496766093. The cubic root of 1234232809 is about 1072.6689157139.

The spelling of 1234232809 in words is "one billion, two hundred thirty-four million, two hundred thirty-two thousand, eight hundred nine".