1226849389 has 2 divisors, whose sum is σ = 1226849390. Its totient is φ = 1226849388.

The previous prime is 1226849369. The next prime is 1226849419. The reversal of 1226849389 is 9839486221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1040062500 + 186786889 = 32250^2 + 13667^2 .

It is a cyclic number.

It is not a de Polignac number, because 1226849389 - 2⁵ = 1226849357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1226849369) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 613424694 + 613424695.

It is an arithmetic number, because the mean of its divisors is an integer number (613424695).

Almost surely, 2^1226849389 is an apocalyptic number.

It is an amenable number.

1226849389 is a deficient number, since it is larger than the sum of its proper divisors (1).

1226849389 is an equidigital number, since it uses as much as digits as its factorization.

1226849389 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1492992, while the sum is 52.

The square root of 1226849389 is about 35026.4098788329. The cubic root of 1226849389 is about 1070.5256650815.

The spelling of 1226849389 in words is "one billion, two hundred twenty-six million, eight hundred forty-nine thousand, three hundred eighty-nine".