1395817 has 2 divisors, whose sum is σ = 1395818. Its totient is φ = 1395816.

The previous prime is 1395809. The next prime is 1395829. The reversal of 1395817 is 7185931.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1390041 + 5776 = 1179^2 + 76^2 .

It is an emirp because it is prime and its reverse (7185931) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1395817 - 2³ = 1395809 is a prime.

It is not a weakly prime, because it can be changed into another prime (1392817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 697908 + 697909.

It is an arithmetic number, because the mean of its divisors is an integer number (697909).

2^1395817 is an apocalyptic number.

It is an amenable number.

1395817 is a deficient number, since it is larger than the sum of its proper divisors (1).

1395817 is an equidigital number, since it uses as much as digits as its factorization.

1395817 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7560, while the sum is 34.

The square root of 1395817 is about 1181.4469941559. The cubic root of 1395817 is about 111.7573669669.

The spelling of 1395817 in words is "one million, three hundred ninety-five thousand, eight hundred seventeen".