1405385 has 8 divisors (see below), whose sum is σ = 1741056. Its totient is φ = 1087920.

The previous prime is 1405367. The next prime is 1405387. The reversal of 1405385 is 5835041.

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

It is not a de Polignac number, because 1405385 - 2¹⁴ = 1389001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1405387) 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 in 7 ways as a sum of consecutive naturals, for example, 4379 + ... + 4688.

It is an arithmetic number, because the mean of its divisors is an integer number (217632).

2^1405385 is an apocalyptic number.

It is an amenable number.

1405385 is a deficient number, since it is larger than the sum of its proper divisors (335671).

1405385 is an equidigital number, since it uses as much as digits as its factorization.

1405385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9103.

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 1405385 is about 1185.4893504372. The cubic root of 1405385 is about 112.0121426036.

The spelling of 1405385 in words is "one million, four hundred five thousand, three hundred eighty-five".