1385385 has 16 divisors (see below), whose sum is σ = 2333760. Its totient is φ = 699840.

The previous prime is 1385383. The next prime is 1385387. The reversal of 1385385 is 5835831.

It is an interprime number because it is at equal distance from previous prime (1385383) and next prime (1385387).

It is not a de Polignac number, because 1385385 - 2¹ = 1385383 is a prime.

It is a Curzon number.

1385385 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1385383) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2146 + ... + 2715.

It is an arithmetic number, because the mean of its divisors is an integer number (145860).

2^1385385 is an apocalyptic number.

1385385 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1385385 is a deficient number, since it is larger than the sum of its proper divisors (948375).

1385385 is a wasteful number, since it uses less digits than its factorization.

1385385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4888.

The product of its digits is 14400, while the sum is 33.

The square root of 1385385 is about 1177.0237890544. The cubic root of 1385385 is about 111.4782545889.

It can be divided in two parts, 1385 and 385, that added together give a triangular number (1770 = T₅₉).

The spelling of 1385385 in words is "one million, three hundred eighty-five thousand, three hundred eighty-five".