1226204047 has 2 divisors, whose sum is σ = 1226204048. Its totient is φ = 1226204046.

The previous prime is 1226204041. The next prime is 1226204059. The reversal of 1226204047 is 7404026221.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1226204047 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1226204041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 613102023 + 613102024.

It is an arithmetic number, because the mean of its divisors is an integer number (613102024).

Almost surely, 2^1226204047 is an apocalyptic number.

1226204047 is a deficient number, since it is larger than the sum of its proper divisors (1).

1226204047 is an equidigital number, since it uses as much as digits as its factorization.

1226204047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5376, while the sum is 28.

The square root of 1226204047 is about 35017.1964468888. The cubic root of 1226204047 is about 1070.3379277360.

The spelling of 1226204047 in words is "one billion, two hundred twenty-six million, two hundred four thousand, forty-seven".