2049779 has 4 divisors (see below), whose sum is σ = 2058960. Its totient is φ = 2040600.

The previous prime is 2049727. The next prime is 2049787. The reversal of 2049779 is 9779402.

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-2049779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2049679) 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, 4247 + ... + 4704.

It is an arithmetic number, because the mean of its divisors is an integer number (514740).

2^2049779 is an apocalyptic number.

2049779 is a deficient number, since it is larger than the sum of its proper divisors (9181).

2049779 is an equidigital number, since it uses as much as digits as its factorization.

2049779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9180.

The product of its (nonzero) digits is 31752, while the sum is 38.

The square root of 2049779 is about 1431.7049276998. The cubic root of 2049779 is about 127.0288441728.

The spelling of 2049779 in words is "two million, forty-nine thousand, seven hundred seventy-nine".