1393585 has 4 divisors (see below), whose sum is σ = 1672308. Its totient is φ = 1114864.

The previous prime is 1393577. The next prime is 1393589. The reversal of 1393585 is 5853931.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 620944 + 772641 = 788^2 + 879^2 .

It is a cyclic number.

It is not a de Polignac number, because 1393585 - 2³ = 1393577 is a prime.

It is a Duffinian number.

1393585 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 1393585.

It is not an unprimeable number, because it can be changed into a prime (1393589) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 139354 + ... + 139363.

It is an arithmetic number, because the mean of its divisors is an integer number (418077).

2^1393585 is an apocalyptic number.

It is an amenable number.

1393585 is a deficient number, since it is larger than the sum of its proper divisors (278723).

1393585 is an equidigital number, since it uses as much as digits as its factorization.

1393585 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278722.

The product of its digits is 16200, while the sum is 34.

The square root of 1393585 is about 1180.5020118577. The cubic root of 1393585 is about 111.6977661455.

It can be divided in two parts, 139358 and 5, that multiplied together give a triangular number (696790 = T₁₁₈₀).

The spelling of 1393585 in words is "one million, three hundred ninety-three thousand, five hundred eighty-five".