1395409 has 8 divisors (see below), whose sum is σ = 1444320. Its totient is φ = 1347456.

The previous prime is 1395367. The next prime is 1395413. The reversal of 1395409 is 9045931.

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 1395409 - 2¹¹ = 1393361 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1395419) 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, 3777 + ... + 4129.

It is an arithmetic number, because the mean of its divisors is an integer number (180540).

2^1395409 is an apocalyptic number.

It is an amenable number.

1395409 is a deficient number, since it is larger than the sum of its proper divisors (48911).

1395409 is an equidigital number, since it uses as much as digits as its factorization.

1395409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 479.

The product of its (nonzero) digits is 4860, while the sum is 31.

The square root of 1395409 is about 1181.2743119191. The cubic root of 1395409 is about 111.7464769412.

The spelling of 1395409 in words is "one million, three hundred ninety-five thousand, four hundred nine".