2135979 has 6 divisors (see below), whose sum is σ = 3085316. Its totient is φ = 1423980.

The previous prime is 2135971. The next prime is 2136011. The reversal of 2135979 is 9795312.

2135979 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2135979 - 2³ = 2135971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2135971) 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 5 ways as a sum of consecutive naturals, for example, 118657 + ... + 118674.

2^2135979 is an apocalyptic number.

2135979 is a deficient number, since it is larger than the sum of its proper divisors (949337).

2135979 is a wasteful number, since it uses less digits than its factorization.

2135979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237337 (or 237334 counting only the distinct ones).

The product of its digits is 17010, while the sum is 36.

The square root of 2135979 is about 1461.4988881282. The cubic root of 2135979 is about 128.7851118614.

It can be divided in two parts, 2 and 135979, that added together give a triangular number (135981 = T₅₂₁).

The spelling of 2135979 in words is "two million, one hundred thirty-five thousand, nine hundred seventy-nine".