2047979 has 4 divisors (see below), whose sum is σ = 2071080. Its totient is φ = 2024880.

The previous prime is 2047967. The next prime is 2047993. The reversal of 2047979 is 9797402.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 2047979 - 2¹⁶ = 1982443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2047919) 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, 11417 + ... + 11594.

It is an arithmetic number, because the mean of its divisors is an integer number (517770).

2^2047979 is an apocalyptic number.

2047979 is a deficient number, since it is larger than the sum of its proper divisors (23101).

2047979 is an equidigital number, since it uses as much as digits as its factorization.

2047979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23100.

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

The square root of 2047979 is about 1431.0761684830. The cubic root of 2047979 is about 126.9916501010.

The spelling of 2047979 in words is "two million, forty-seven thousand, nine hundred seventy-nine".