1385805 has 8 divisors (see below), whose sum is σ = 2217312. Its totient is φ = 739088.

The previous prime is 1385801. The next prime is 1385809. The reversal of 1385805 is 5085831.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1385801) and next prime (1385809).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1385805 - 2² = 1385801 is a prime.

It is an Ulam number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1385801) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46179 + ... + 46208.

It is an arithmetic number, because the mean of its divisors is an integer number (277164).

2^1385805 is an apocalyptic number.

1385805 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1385805 is a deficient number, since it is larger than the sum of its proper divisors (831507).

1385805 is an equidigital number, since it uses as much as digits as its factorization.

1385805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92395.

The product of its (nonzero) digits is 4800, while the sum is 30.

The square root of 1385805 is about 1177.2021916391. The cubic root of 1385805 is about 111.4895188791.

The spelling of 1385805 in words is "one million, three hundred eighty-five thousand, eight hundred five".