1226459869 has 2 divisors, whose sum is σ = 1226459870. Its totient is φ = 1226459868.

The previous prime is 1226459863. The next prime is 1226459873. The reversal of 1226459869 is 9689546221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1188180900 + 38278969 = 34470^2 + 6187^2 .

It is an emirp because it is prime and its reverse (9689546221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1226459869 - 2⁹ = 1226459357 is a prime.

It is a super-2 number, since 2×1226459869² = 3008407620534994322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1226459863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 613229934 + 613229935.

It is an arithmetic number, because the mean of its divisors is an integer number (613229935).

Almost surely, 2^1226459869 is an apocalyptic number.

It is an amenable number.

1226459869 is a deficient number, since it is larger than the sum of its proper divisors (1).

1226459869 is an equidigital number, since it uses as much as digits as its factorization.

1226459869 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1866240, while the sum is 52.

The square root of 1226459869 is about 35020.8490616661. The cubic root of 1226459869 is about 1070.4123571510.

The spelling of 1226459869 in words is "one billion, two hundred twenty-six million, four hundred fifty-nine thousand, eight hundred sixty-nine".