1295809 has 2 divisors, whose sum is σ = 1295810. Its totient is φ = 1295808.

The previous prime is 1295803. The next prime is 1295813. The reversal of 1295809 is 9085921.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 810000 + 485809 = 900^2 + 697^2 .

It is a cyclic number.

It is not a de Polignac number, because 1295809 - 2⁷ = 1295681 is a prime.

It is not a weakly prime, because it can be changed into another prime (1295803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 647904 + 647905.

It is an arithmetic number, because the mean of its divisors is an integer number (647905).

2^1295809 is an apocalyptic number.

It is an amenable number.

1295809 is a deficient number, since it is larger than the sum of its proper divisors (1).

1295809 is an equidigital number, since it uses as much as digits as its factorization.

1295809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6480, while the sum is 34.

The square root of 1295809 is about 1138.3360663706. The cubic root of 1295809 is about 109.0218792878.

The spelling of 1295809 in words is "one million, two hundred ninety-five thousand, eight hundred nine".