2002979 has 4 divisors (see below), whose sum is σ = 2185080. Its totient is φ = 1820880.

The previous prime is 2002969. The next prime is 2002993. The reversal of 2002979 is 9792002.

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 2002979 - 2⁸ = 2002723 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2002919) 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, 91034 + ... + 91055.

It is an arithmetic number, because the mean of its divisors is an integer number (546270).

2^2002979 is an apocalyptic number.

2002979 is a deficient number, since it is larger than the sum of its proper divisors (182101).

2002979 is a wasteful number, since it uses less digits than its factorization.

2002979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182100.

The product of its (nonzero) digits is 2268, while the sum is 29.

The square root of 2002979 is about 1415.2664060169. The cubic root of 2002979 is about 126.0546290367.

The spelling of 2002979 in words is "two million, two thousand, nine hundred seventy-nine".