1264009 has 2 divisors, whose sum is σ = 1264010. Its totient is φ = 1264008.

The previous prime is 1263979. The next prime is 1264027. The reversal of 1264009 is 9004621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 944784 + 319225 = 972^2 + 565^2 .

It is an emirp because it is prime and its reverse (9004621) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1264009 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1264049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 632004 + 632005.

It is an arithmetic number, because the mean of its divisors is an integer number (632005).

2^1264009 is an apocalyptic number.

It is an amenable number.

1264009 is a deficient number, since it is larger than the sum of its proper divisors (1).

1264009 is an equidigital number, since it uses as much as digits as its factorization.

1264009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 1264009 is about 1124.2815483677. The cubic root of 1264009 is about 108.1226601340.

The spelling of 1264009 in words is "one million, two hundred sixty-four thousand, nine".