1338247 has 2 divisors, whose sum is σ = 1338248. Its totient is φ = 1338246.

The previous prime is 1338241. The next prime is 1338269. The reversal of 1338247 is 7428331.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1338247 is a prime.

1338247 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1338241) 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, 669123 + 669124.

It is an arithmetic number, because the mean of its divisors is an integer number (669124).

2^1338247 is an apocalyptic number.

1338247 is a deficient number, since it is larger than the sum of its proper divisors (1).

1338247 is an equidigital number, since it uses as much as digits as its factorization.

1338247 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4032, while the sum is 28.

The square root of 1338247 is about 1156.8262618043. The cubic root of 1338247 is about 110.1992806301.

The spelling of 1338247 in words is "one million, three hundred thirty-eight thousand, two hundred forty-seven".