1388927 has 2 divisors, whose sum is σ = 1388928. Its totient is φ = 1388926.

The previous prime is 1388887. The next prime is 1388941. The reversal of 1388927 is 7298831.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1388927 - 2¹⁴ = 1372543 is a prime.

It is a super-2 number, since 2×1388927² = 3858236422658, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1388227) 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, 694463 + 694464.

It is an arithmetic number, because the mean of its divisors is an integer number (694464).

2^1388927 is an apocalyptic number.

1388927 is a deficient number, since it is larger than the sum of its proper divisors (1).

1388927 is an equidigital number, since it uses as much as digits as its factorization.

1388927 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24192, while the sum is 38.

The square root of 1388927 is about 1178.5274710417. The cubic root of 1388927 is about 111.5731788510.

The spelling of 1388927 in words is "one million, three hundred eighty-eight thousand, nine hundred twenty-seven".