2979889 has 4 divisors (see below), whose sum is σ = 3250800. Its totient is φ = 2708980.

The previous prime is 2979877. The next prime is 2979901. The reversal of 2979889 is 9889792.

2979889 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (2979877) and next prime (2979901).

It is a cyclic number.

It is not a de Polignac number, because 2979889 - 2⁷ = 2979761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2979989) 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, 135439 + ... + 135460.

It is an arithmetic number, because the mean of its divisors is an integer number (812700).

2^2979889 is an apocalyptic number.

It is an amenable number.

2979889 is a deficient number, since it is larger than the sum of its proper divisors (270911).

2979889 is a wasteful number, since it uses less digits than its factorization.

2979889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270910.

The product of its digits is 653184, while the sum is 52.

The square root of 2979889 is about 1726.2354995770. The cubic root of 2979889 is about 143.9019555081.

Subtracting 2979889 from its reverse (9889792), we obtain a triangular number (6909903 = T₃₇₁₇).

The spelling of 2979889 in words is "two million, nine hundred seventy-nine thousand, eight hundred eighty-nine".