1209226433 has 4 divisors (see below), whose sum is σ = 1212814980. Its totient is φ = 1205637888.

The previous prime is 1209226411. The next prime is 1209226451. The reversal of 1209226433 is 3346229021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3346229021 = 22063 ⋅151667.

It can be written as a sum of positive squares in 2 ways, for example, as 216472369 + 992754064 = 14713^2 + 31508^2 .

It is a cyclic number.

It is not a de Polignac number, because 1209226433 - 2¹⁴ = 1209210049 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1209226433.

It is not an unprimeable number, because it can be changed into a prime (1209226463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1793768 + ... + 1794441.

It is an arithmetic number, because the mean of its divisors is an integer number (303203745).

Almost surely, 2^1209226433 is an apocalyptic number.

It is an amenable number.

1209226433 is a deficient number, since it is larger than the sum of its proper divisors (3588547).

1209226433 is an equidigital number, since it uses as much as digits as its factorization.

1209226433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3588546.

The product of its (nonzero) digits is 15552, while the sum is 32.

The square root of 1209226433 is about 34773.9332402879. The cubic root of 1209226433 is about 1065.3751044105.

The spelling of 1209226433 in words is "one billion, two hundred nine million, two hundred twenty-six thousand, four hundred thirty-three".