1338923 has 2 divisors, whose sum is σ = 1338924. Its totient is φ = 1338922.

The previous prime is 1338907. The next prime is 1338941. The reversal of 1338923 is 3298331.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1338923 - 2⁴ = 1338907 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1338823) 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, 669461 + 669462.

It is an arithmetic number, because the mean of its divisors is an integer number (669462).

2^1338923 is an apocalyptic number.

1338923 is a deficient number, since it is larger than the sum of its proper divisors (1).

1338923 is an equidigital number, since it uses as much as digits as its factorization.

1338923 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3888, while the sum is 29.

The square root of 1338923 is about 1157.1184036217. The cubic root of 1338923 is about 110.2178328041.

The spelling of 1338923 in words is "one million, three hundred thirty-eight thousand, nine hundred twenty-three".