2127879389 has 4 divisors (see below), whose sum is σ = 2128751424. Its totient is φ = 2127007356.

The previous prime is 2127879353. The next prime is 2127879421. The reversal of 2127879389 is 9839787212.

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 a cyclic number.

It is not a de Polignac number, because 2127879389 - 2¹² = 2127875293 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2127879319) 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, 432347 + ... + 437240.

It is an arithmetic number, because the mean of its divisors is an integer number (532187856).

Almost surely, 2^2127879389 is an apocalyptic number.

It is an amenable number.

2127879389 is a deficient number, since it is larger than the sum of its proper divisors (872035).

2127879389 is an equidigital number, since it uses as much as digits as its factorization.

2127879389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 872034.

The product of its digits is 3048192, while the sum is 56.

The square root of 2127879389 is about 46128.9430726523. The cubic root of 2127879389 is about 1286.2212171655.

The spelling of 2127879389 in words is "two billion, one hundred twenty-seven million, eight hundred seventy-nine thousand, three hundred eighty-nine".