1263627479 has 2 divisors, whose sum is σ = 1263627480. Its totient is φ = 1263627478.

The previous prime is 1263627461. The next prime is 1263627481. The reversal of 1263627479 is 9747263621.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1263627479 - 2⁸ = 1263627223 is a prime.

Together with 1263627481, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1263627419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 631813739 + 631813740.

It is an arithmetic number, because the mean of its divisors is an integer number (631813740).

Almost surely, 2^1263627479 is an apocalyptic number.

1263627479 is a deficient number, since it is larger than the sum of its proper divisors (1).

1263627479 is an equidigital number, since it uses as much as digits as its factorization.

1263627479 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 762048, while the sum is 47.

The square root of 1263627479 is about 35547.5382973280. The cubic root of 1263627479 is about 1081.1178067129.

The spelling of 1263627479 in words is "one billion, two hundred sixty-three million, six hundred twenty-seven thousand, four hundred seventy-nine".