1264979 has 2 divisors, whose sum is σ = 1264980. Its totient is φ = 1264978.

The previous prime is 1264969. The next prime is 1264981. The reversal of 1264979 is 9794621.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1264979 is a prime.

It is a Sophie Germain prime.

Together with 1264981, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1264909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 632489 + 632490.

It is an arithmetic number, because the mean of its divisors is an integer number (632490).

2^1264979 is an apocalyptic number.

1264979 is a deficient number, since it is larger than the sum of its proper divisors (1).

1264979 is an equidigital number, since it uses as much as digits as its factorization.

1264979 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27216, while the sum is 38.

The square root of 1264979 is about 1124.7128522427. The cubic root of 1264979 is about 108.1503108242.

The spelling of 1264979 in words is "one million, two hundred sixty-four thousand, nine hundred seventy-nine".