2081979 has 6 divisors (see below), whose sum is σ = 3007316. Its totient is φ = 1387980.

The previous prime is 2081969. The next prime is 2082019. The reversal of 2081979 is 9791802.

It is a happy number.

It is not a de Polignac number, because 2081979 - 2⁷ = 2081851 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2081909) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 115657 + ... + 115674.

2^2081979 is an apocalyptic number.

2081979 is a deficient number, since it is larger than the sum of its proper divisors (925337).

2081979 is a wasteful number, since it uses less digits than its factorization.

2081979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231337 (or 231334 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 36.

The square root of 2081979 is about 1442.9064418735. The cubic root of 2081979 is about 127.6905570421.

It can be divided in two parts, 208 and 1979, that added together give a 7-th power (2187 = 3⁷).

The spelling of 2081979 in words is "two million, eighty-one thousand, nine hundred seventy-nine".