1259859 has 4 divisors (see below), whose sum is σ = 1679816. Its totient is φ = 839904.

The previous prime is 1259851. The next prime is 1259873. The reversal of 1259859 is 9589521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9589521 = 3 ⋅3196507.

It is not a de Polignac number, because 1259859 - 2³ = 1259851 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1259851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 209974 + ... + 209979.

It is an arithmetic number, because the mean of its divisors is an integer number (419954).

2^1259859 is an apocalyptic number.

1259859 is a deficient number, since it is larger than the sum of its proper divisors (419957).

1259859 is an equidigital number, since it uses as much as digits as its factorization.

1259859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 419956.

The product of its digits is 32400, while the sum is 39.

The square root of 1259859 is about 1122.4344078832. The cubic root of 1259859 is about 108.0042007968.

The spelling of 1259859 in words is "one million, two hundred fifty-nine thousand, eight hundred fifty-nine".