2078459 has 4 divisors (see below), whose sum is σ = 2150160. Its totient is φ = 2006760.

The previous prime is 2078449. The next prime is 2078473. The reversal of 2078459 is 9548702.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9548702 = 2 ⋅4774351.

It is a cyclic number.

It is not a de Polignac number, because 2078459 - 2⁴ = 2078443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2078449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35807 + ... + 35864.

It is an arithmetic number, because the mean of its divisors is an integer number (537540).

2^2078459 is an apocalyptic number.

2078459 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

2078459 is a deficient number, since it is larger than the sum of its proper divisors (71701).

2078459 is an equidigital number, since it uses as much as digits as its factorization.

2078459 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71700.

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 2078459 is about 1441.6861655714. The cubic root of 2078459 is about 127.6185543457.

The spelling of 2078459 in words is "two million, seventy-eight thousand, four hundred fifty-nine".