1267055479 has 2 divisors, whose sum is σ = 1267055480. Its totient is φ = 1267055478.

The previous prime is 1267055477. The next prime is 1267055497. The reversal of 1267055479 is 9745507621.

Together with next prime (1267055497) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is an emirp because it is prime and its reverse (9745507621) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1267055479 - 2¹ = 1267055477 is a prime.

Together with 1267055477, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1267055477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 633527739 + 633527740.

It is an arithmetic number, because the mean of its divisors is an integer number (633527740).

Almost surely, 2^1267055479 is an apocalyptic number.

1267055479 is a deficient number, since it is larger than the sum of its proper divisors (1).

1267055479 is an equidigital number, since it uses as much as digits as its factorization.

1267055479 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 529200, while the sum is 46.

The square root of 1267055479 is about 35595.7227627141. The cubic root of 1267055479 is about 1082.0945517417.

The spelling of 1267055479 in words is "one billion, two hundred sixty-seven million, fifty-five thousand, four hundred seventy-nine".