2879639 has 8 divisors (see below), whose sum is σ = 3325728. Its totient is φ = 2442240.

The previous prime is 2879609. The next prime is 2879641. The reversal of 2879639 is 9369782.

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

It is a cyclic number.

It is not a de Polignac number, because 2879639 - 2¹⁶ = 2814103 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2879639.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2879609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1442 + ... + 2799.

It is an arithmetic number, because the mean of its divisors is an integer number (415716).

2^2879639 is an apocalyptic number.

2879639 is a deficient number, since it is larger than the sum of its proper divisors (446089).

2879639 is an equidigital number, since it uses as much as digits as its factorization.

2879639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4345.

The product of its digits is 163296, while the sum is 44.

The square root of 2879639 is about 1696.9499108695. The cubic root of 2879639 is about 142.2697873086.

The spelling of 2879639 in words is "two million, eight hundred seventy-nine thousand, six hundred thirty-nine".