2043979 has 4 divisors (see below), whose sum is σ = 2335984. Its totient is φ = 1751976.

The previous prime is 2043971. The next prime is 2043989. The reversal of 2043979 is 9793402.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9793402 = 2 ⋅4896701.

It is a cyclic number.

It is not a de Polignac number, because 2043979 - 2³ = 2043971 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2043971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 145992 + ... + 146005.

It is an arithmetic number, because the mean of its divisors is an integer number (583996).

2^2043979 is an apocalyptic number.

2043979 is a deficient number, since it is larger than the sum of its proper divisors (292005).

2043979 is an equidigital number, since it uses as much as digits as its factorization.

2043979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 292004.

The product of its (nonzero) digits is 13608, while the sum is 34.

The square root of 2043979 is about 1429.6779357604. The cubic root of 2043979 is about 126.9089185120.

The spelling of 2043979 in words is "two million, forty-three thousand, nine hundred seventy-nine".