1395789 has 8 divisors (see below), whose sum is σ = 1887552. Its totient is φ = 917280.

The previous prime is 1395781. The next prime is 1395791. The reversal of 1395789 is 9875931.

It is a happy number.

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

It is not a de Polignac number, because 1395789 - 2³ = 1395781 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1395789.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1395781) 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, 3064 + ... + 3489.

It is an arithmetic number, because the mean of its divisors is an integer number (235944).

2^1395789 is an apocalyptic number.

It is an amenable number.

1395789 is a deficient number, since it is larger than the sum of its proper divisors (491763).

1395789 is an equidigital number, since it uses as much as digits as its factorization.

1395789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6627.

The product of its digits is 68040, while the sum is 42.

The square root of 1395789 is about 1181.4351442208. The cubic root of 1395789 is about 111.7566196800.

The spelling of 1395789 in words is "one million, three hundred ninety-five thousand, seven hundred eighty-nine".