1385887 has 2 divisors, whose sum is σ = 1385888. Its totient is φ = 1385886.

The previous prime is 1385873. The next prime is 1385893. The reversal of 1385887 is 7885831.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1385887 - 2¹⁹ = 861599 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1385827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 692943 + 692944.

It is an arithmetic number, because the mean of its divisors is an integer number (692944).

2^1385887 is an apocalyptic number.

1385887 is a deficient number, since it is larger than the sum of its proper divisors (1).

1385887 is an equidigital number, since it uses as much as digits as its factorization.

1385887 is an evil number, because the sum of its binary digits is even.

The product of its digits is 53760, while the sum is 40.

The square root of 1385887 is about 1177.2370194655. The cubic root of 1385887 is about 111.4917178321.

The spelling of 1385887 in words is "one million, three hundred eighty-five thousand, eight hundred eighty-seven".