2805979 has 8 divisors (see below), whose sum is σ = 3119472. Its totient is φ = 2502240.

The previous prime is 2805973. The next prime is 2805989. The reversal of 2805979 is 9795082.

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

It is a cyclic number.

It is not a de Polignac number, because 2805979 - 2⁷ = 2805851 is a prime.

It is a Duffinian number.

2805979 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2805973) 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, 1824 + ... + 2989.

It is an arithmetic number, because the mean of its divisors is an integer number (389934).

2^2805979 is an apocalyptic number.

2805979 is a deficient number, since it is larger than the sum of its proper divisors (313493).

2805979 is a wasteful number, since it uses less digits than its factorization.

2805979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4877.

The product of its (nonzero) digits is 45360, while the sum is 40.

The square root of 2805979 is about 1675.1056683087. The cubic root of 2805979 is about 141.0462266484.

The spelling of 2805979 in words is "two million, eight hundred five thousand, nine hundred seventy-nine".