2012779 has 4 divisors (see below), whose sum is σ = 2041200. Its totient is φ = 1984360.

The previous prime is 2012767. The next prime is 2012789. The reversal of 2012779 is 9772102.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2012779 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2012719) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14104 + ... + 14245.

It is an arithmetic number, because the mean of its divisors is an integer number (510300).

2^2012779 is an apocalyptic number.

2012779 is a deficient number, since it is larger than the sum of its proper divisors (28421).

2012779 is an equidigital number, since it uses as much as digits as its factorization.

2012779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28420.

The product of its (nonzero) digits is 1764, while the sum is 28.

The square root of 2012779 is about 1418.7244270823. The cubic root of 2012779 is about 126.2598776705.

Subtracting from 2012779 its product of nonzero digits (1764), we obtain a triangular number (2011015 = T₂₀₀₅).

The spelling of 2012779 in words is "two million, twelve thousand, seven hundred seventy-nine".