1226077397 has 2 divisors, whose sum is σ = 1226077398. Its totient is φ = 1226077396.

The previous prime is 1226077379. The next prime is 1226077403. The reversal of 1226077397 is 7937706221.

Together with previous prime (1226077379) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 968827876 + 257249521 = 31126^2 + 16039^2 .

It is an emirp because it is prime and its reverse (7937706221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1226077397 - 2⁸ = 1226077141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1226077327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 613038698 + 613038699.

It is an arithmetic number, because the mean of its divisors is an integer number (613038699).

Almost surely, 2^1226077397 is an apocalyptic number.

It is an amenable number.

1226077397 is a deficient number, since it is larger than the sum of its proper divisors (1).

1226077397 is an equidigital number, since it uses as much as digits as its factorization.

1226077397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 222264, while the sum is 44.

The square root of 1226077397 is about 35015.3880029909. The cubic root of 1226077397 is about 1070.3010760755.

The spelling of 1226077397 in words is "one billion, two hundred twenty-six million, seventy-seven thousand, three hundred ninety-seven".