2979823 has 8 divisors (see below), whose sum is σ = 3715200. Its totient is φ = 2321880.

The previous prime is 2979817. The next prime is 2979833. The reversal of 2979823 is 3289792.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2979823 - 2⁹ = 2979311 is a prime.

It is a super-2 number, since 2×2979823² = 17758690222658, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2979833) 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 7 ways as a sum of consecutive naturals, for example, 19273 + ... + 19426.

It is an arithmetic number, because the mean of its divisors is an integer number (464400).

2^2979823 is an apocalyptic number.

2979823 is a deficient number, since it is larger than the sum of its proper divisors (735377).

2979823 is a wasteful number, since it uses less digits than its factorization.

2979823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38717.

The product of its digits is 54432, while the sum is 40.

The square root of 2979823 is about 1726.2163827284. The cubic root of 2979823 is about 143.9008930972.

The spelling of 2979823 in words is "two million, nine hundred seventy-nine thousand, eight hundred twenty-three".