1264447 has 2 divisors, whose sum is σ = 1264448. Its totient is φ = 1264446.

The previous prime is 1264411. The next prime is 1264451. The reversal of 1264447 is 7444621.

It is a strong prime.

It is an emirp because it is prime and its reverse (7444621) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1264447 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1267447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 632223 + 632224.

It is an arithmetic number, because the mean of its divisors is an integer number (632224).

2^1264447 is an apocalyptic number.

1264447 is a deficient number, since it is larger than the sum of its proper divisors (1).

1264447 is an equidigital number, since it uses as much as digits as its factorization.

1264447 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5376, while the sum is 28.

The square root of 1264447 is about 1124.4763225609. The cubic root of 1264447 is about 108.1351474544.

It can be divided in two parts, 1264 and 447, that added together give a triangular number (1711 = T₅₈).

The spelling of 1264447 in words is "one million, two hundred sixty-four thousand, four hundred forty-seven".